Connectix has released an update (4.0.1) for Virtual PC 4.0.
The update fixes some glitches – including one in which the low hard-drive space error message came up incorrectly – and makes the application compatible with Mac OS 9.1.
Virtual PC 4.0 is Connectix's solution to run Windows operating systems and applications on a Mac. Text and data can also be drag-&-dropped between Windows and Mac applications.
The update is available for download from Connectix.