Microsoft has been given a court order to search for email that relates to a case against it bought by

A federal judge in Baltimore has ordered the company to search for an email from one of its executives that orders employees to delete emails that relate to discussions with The email in question is four years old and ordered employees to delete messages after 30 days – a shorter period than the company's usual policy.

Microsoft will comply with the new instructions, but denied that the order was related to legal cases facing the company at the time, said Microsoft spokesman Jim Desler.

The company is still reviewing a transcript of the instructions regarding the email message. Microsoft will likely provide the court with more email messages that put in context the reminder that came from James Allchin, group vice president of Microsoft’s Platforms Group, to "destroy all business-related" email, Desler said. filed its suit against Microsoft in June 2002, alleging that Microsoft stole patented technology and trade secrets concerning Internet-based video-on-demand for its Windows Media Player product. Microsoft learned all about's technology in two years of meetings and discussions. Microsoft signed a nondisclosure agreement with Burst before those meetings, said.

The Allchin email surfaced after filed repeated motions for Microsoft to turn over email messages and backup tapes containing email. is looking for documents from a number of Microsoft employees who worked in Microsoft's Digital Media Division and worked with before the two companies’ ending talks. A number of those employees have since left Microsoft. Their employee files were destroyed by the company after they left, Hosie said.

Microsoft acknowledges that it cannot find some of the documents is looking for, but denies that there is a company policy to destroy important documents.

"Burst is trying to make the allegation that Microsoft was doing something in terms of document retention – this came up in a broader discussion of the existence of emails or notes that we have looked thoroughly for, but don't know if they exist," Desler said.

So far, Microsoft has turned over more than 500,000 pages from 60 employee files in the case, Desler said. But Hosie said that many of those documents are bug test records and are of little use in the litigation.

Allchin's comments in the email were part of an ongoing discussion or "thread" concerning document retention that Allchin did not start. That said, the 30-day limit on keeping old email is a "stricter version" of the company's policy, Desler said.

Desler could not say how long Microsoft employees are allowed to hold onto email messages, but said it was longer than 30 days.

Still, Microsoft has information that will show that Allchin's comments were "consistent with Microsoft's policy to meet all its legal obligations and provide for efficient management of its corporate email," he said.'s allegations regarding Microsoft's email retention policies are without merit and are designed to distract attention from the patent infringement issues, which show that Microsoft used its "own work and innovation" with the Windows Media Player, Desler said.

Hosie denied that, and contended that Microsoft's 30-day purging policy was directly related to the company's legal woes.

Among other things, Hosie questioned why a senior Microsoft executive like Allchin would devote any time to an administrative issue such as document retention. He also made connections between the timing of the email and the US government's antitrust case against Microsoft, in which Allchin's emails were used as proof that the company engaged in anti-competitive behavior.

Microsoft has also been unable to say who created the 30-day purging policy, ultimately crediting an unnamed Microsoft IT department employee, Hosie said.

Despite the fact that the Allchin email was sent long before filed suit against Microsoft, it still affects the outcome of the case if can prove that Microsoft made a practice of destroying documents in the face of litigation, Hosie said.

"If I can show that these files were deleted improperly, it will change the way the trial proceeds," he said.

The issue of document retention is a particularly volatile one, especially in the wake of a jury's conviction of Frank Quattrone in May.

Quattrone was head of the Technology Group at Credit Suisse First Boston (CSFB) and was found guilty of obstructing a grand jury investigation into the issuance of shares in an IPO (initial public offerings) after he sent an email reminding colleagues about CSFB's document retention policy shortly after learning of a federal probe into the IPO allocation issue.

Desler dismissed any similarities between's allegations about Microsoft and the case against Quattrone and CSFB.

"One thing is clear: Microsoft has been completely forthcoming in providing any and all evidence requested of it," he said.