resizing XP partition w/ Part. Magic

I have XP pro and Win98SE on my laptop. A few days ago, I decided to change the sizes of the partitions to give more space to the XP partition (from 10 GB to 15 GB). There didn't seem to be any problem when this was being done, but when I restarted in XP, it hangs on the first "bluish" screen that comes up to display the login screen. Also, it just displays the XP logo without the "Windows is starting up" message below it. The XP partition is FAT32. I tested the 98 partition, and it works just fine. Any help would be greatly appreciated! Thanks.