okay here is my problem...I have Windows 2000 and bought Windows XP becasue my joystick a thrustmaster wouldn't work with windows 2000...anyways I didn't want to deleate windows 2000 because I would loose alot off things...so I put both Windows 2000 abnd XP on the same Computer but on diffrent hard drives...then i moved FS 2002 to the XP side and flew..everything worked PERFECT....no studuring at all..well after 4-5 days of flying in XP..I started to loose my runwasy I took off from Miami one day and I there was no airport around for miles...actually thee was none at all...so I decide to deleate Windos 2000 and just load XP on the whole computer..well it didn't work ...what can I do to be able to fly again....please help...please

when you say you deleted windows I hope you meant you uninstalled it.
what I would try is to start from scratch put back windows 2000 then run the xp update and install on top of 2000 be sure you follow the instructions that came with the update cd for XP.
I would first uninstall XP then delete any left over folders.
Then restart system then follow the instructions that should have come with the update cd.
If you bought a full blown install version of xp you should find instructions in it as well as to the order in which you need to proceed. Be prepared to reinstall any software as there are different drivers between the two window system even though xp is based on 2000 there could be some driver differances.