Wndows media player to Apple Itunes


I have ripped quite a few CD's to my external hardrive using WMP11 as my library. They are ripped in Windows Lossless format. I want to purchase a new computer and was thinking of switching to Apple. Would this be an easy transition. Can I hook my external to the Apple and play music off it and use the Itunes setup or would this be to complicated to do. Should I just purchase another Windows PC.
bodine
Mine is the last of of there product line that has not changed processors, G5 to Intel Dual Core. It's not PC compatible nor do I want or need it to be. My Son has a new MacBook laptop with the newer processor. Other than hardware options I can’t see a difference. If your are not familiar the new/older mac’s below is a link the apples G5 page. Check out the spec’s and the way the case is engineered and constructed. The darn thing is built like a BMW. Very impressive design.

http://www.apple.com/powermac/
Vegasears: As you say, Macs can read a PC-formatted hard drive--and that includes a lot of older Macs, not just the new Intels. But that's not Bodine's problem. His problem is that his music files are encoded in a Windows Media format, and iTunes on a Mac cannot read those files, as far as I know. That's why he needs to find some sort of conversion software.
Smart Audio Converter doesn't appear to support Apple Lossless. But the one I mentioned above, dBpowerAMP Music Converter, might.
I was talking to a saleman at Comp USA and he said that the mac would be able to read the windows losslees file and that I-tunes would be able to convert it to Apple lossless. I don't know if he was being honest or just said that to make a sale.I guess I-tunes will create a music library once it reads the file.