transferring session from a pc to a mac???

Which version are you using. when you save your sessions, I think you can tell PT to "Force Mac compatibility", or words to that effect. I myself am very new. Only registered today .... Jump in, fellas ....

GT is correct, pre-PT7 you'll need to check the 'enforce Mac / PC copmatibility' checkbox in the 'save' / 'save as' dialog. The lastest version of PT inherently does this for you...

There are several methods, but many of them are dependent on what Pro Tools version you are using at all locations that you are using it. It would be best if we could direct a solution for you that would be best in your situation, but without more information, that's not possible. Best scenario; you are using PT7.3 that way you can format a firewire hard drive on the mac as HFS+, and record your sessions directly to it in all locations. That will only work if you are using 7.3 on windows.