hi ehhh.... we had plans to play lan trough a lan via network cable with win 7 on mine and win xp on his computer. his computer is a hp laptop from school and had it's own domain setted up for school use. anyway, i've used this guide to get it working: http://www.howtogeek.com/howto/windows-7/share-files-and-printers-between-windows-7-and-xp/ then i did some changes on mine and his compute, and thats when the problem on his laptop started. he can't log in on the computer and gets message: wrong password/username or wrong domain. there is no options than write username and password on the log on screen, no domain options. is there anyway to get it back as it where before i've messed it up?