I'm going to be building a new computer soon, and I'm deciding between getting the upgrade verion of XP Pro (which I can get with Office XP for $99) or the full install which is $143. I currently have a legit copy of 98se which I would use, then upgrade to XP Pro. I'm just wondering if there are any known problems with upgrading that I wouldn't have to worry about if I just went with the full install. Also, is it at all difficult to convert from FAT32 to NTFS file system? This would be done right after upgrade so nothing else would be installed.