Well one of the usual ways is to burn the old data on to a cdr and transfer it that way. This needs a cdrw drive in the old system.
If this is not available, then one of the other ways is to take out the old hard drive from the computer. Change the jumper setting on the old hard drive to slave and connect it to the new system. Your friend could then drag and drop all the files off his old hard drive that he wanted. It would not matter that the new computer is running x\p, whether the file system is ntfs or fat32, the x\p disk will see it.
To make the connection in the new computer it would mean slotting in the old hard drive into a spare bay next to the new hard drive. Connecting a spare IDE ribbon cable and the power connector. There should be a spare one of each in the new computer. It would then need booting up. Windows will either see it straight away or it may need a trip to disk management to see the drive.