|You need to see on which partition each installation is on, which one works better, and which has your personal files on it. Since each installation will consider the partition it is installed on as C drive when it is active and the other probably as D (or E) drive, you will need to go by partition sizes to keep it straight. It probably would be best to back up your personal files, delete all partitions, repartition, format, and reinstall XP, followed by copying back your files. Depending on the combinations, you may be able to back up your files, delete one partition, possible resize the other, create the other partition, format it and put back your files. You also probably will need to use msconfig to remove the second installation from your boot up options and select the other as default. Depending on your combination, this should be possible, but more difficult to keep things straight in your head. You also will probably need a partition program that will work outside of Windows since XP's Disk Manager cannot resize its partition and you may need to move the remaining partition to the beginning (outside) of the disk since XP would prefer this and it will leave you an easier single space for your other partition. Like I said, it might be easier to start over.|
You have to be a little bit crazy to keep you from going insane.