Australia's first ever internet technical support line dedicated to Mac users was launched Friday.

Established by Internet Service Provider (ISP) iiNet, the company's chief operating officer, Mark White, said it was formed to the growing number of its customers using Macs.

"The number of iiNet customers who use Macs is increasing," he said.

"This new support line is about extending our already strong support experience where customers need it." White said the specialist Mac support team has undergone a training program designed by Apple, and is dedicated to teaching effective troubleshooting for Mac users.

"Each member of the support team has access to a range of live Mac computers and operating systems, to enable a faster, more individualized and accurate response," he said.

"Our tech support line has seen around 5 per cent of callers opting for the Mac support option.

The percentage of iiNet customers that use Macs is higher than ever before - they currently represent around 10 per cent of our customer base and we expect our Mac user numbers to increase even faster than industry predictions on Mac market share."

Apple's share of desktop and notebook sales online and through brick-and-mortar stores in May 2007 rose to 13 per cent from 11.6 per cent in April 2007, according to The NPD Group.