Hi, So I got a mbp yesterday and wanted to transfer my iTunes library from my iMac to my mbp. I had an HP personal media hard drive that I used on [my now obselete] PC and I was never able to get my iMac to write to it - only read. I just read that the problem was because it was formatted for NTFS which was not mac-writable. I found this nifty PC program (swissknife or something) and it fixed it! It was a very nice surprise because I was anticipating dropping 100$ on a new drive.