I need to import CWK and WRK files into my Macbook Pro

Hello All:

Several years ago I created numerous song files in both Cakewalk and Pro Audio. The files have either a CWK or WRK extensions, created on a PC with Windows XP. I used a Midi keyboard and a Roland Sound Canvas to create the files. 

I now have a MacBook Pro. I was told I could import the above files into Logic, and I can, with great difficulty and huge amounts of time trying to reassign the instruments. 

I am willing to buy new Cakewalk software if I can use it on my Mac and if I can import the above files with relative ease. But I cannot seem to find anyone who knows anything about this. I cannot be the only person on earth who created CWK and WRK files on a PC and then later wanted to migrate them over to a Mac. 

Please advise. These were huge projects (pop music songs) that were shelved and now there is interest again and I need to bring the files up to date without having to buy another PC computer just so I can open them.

Your advice would be greatly, greatly appreciated.
-David