I have been unable to get my USB 40 gig HD (Q-memory) to work in both my MAC and my PC. I need to make it work in both computers so I can transfer large amounts of data from the PC to the Mac. I was told that if I want to use it on Mac and PC, I'll have to format it (on the Mac) as FAT32/MS-DOS format or format as Mac Extended/HFS+ and get MacDrive so the PC can use it. I tried this but I was unsuccessful. First of all, the disk utility did not give me the option of a FAT32/MSDOS format. I formatted it as MAC Extended/HFS+ (or something like that) and this did not work either. The formatting did allow me to use the Q-memory with the Mac. The Mac recognized it after the format and allowed me to read and write from/to it. However, it then did not work in the PC (whereas before it did work in the PC but not in the MAC). Now, the PC says the Q-memory external HD is working (when going through the install hardware/trouble shooting function) but it won't "show" it on Windows Explorer. Therefore, I can't work with it on the PC. The Mac is a blue and white PowerMac G3 running OS 10.3 and the PC is running Windows 2000. If I remember correctly the Mac Disk utility only gave me 3 or 4 options when formatting – one of which was Unix. Also, somebody told me to "get MacDrive so the PC can use it" but I don't know what this means. Any help would be greatly appreciated.