Software MUST be sold in accordance with it's respective EULA - read the specific EULA for the software you are thinking to sell or trade.
For further reference, visit
http://www.microsoft.com/piracy/licenseguide/
No burned copies, no rips, no warez. If software offered for sale or trade is not in compliance with that company's EULA, the post may be closed, edited or deleted without further warning. Please report the User if illegal soft is offered in a deal. Your identity will remain confidential.
thats from the rules thread... if that XP Pro, office XP, and Photo shop ain't legal you better take it off.