set it all up and boot it. See what happens. There are a couple things that control what will happen next. if it bluescreens, just install XP on the box in another folder. That will get around this problem, and give you all the data still. If it boots up and want's to activate, avtivate it with MS and then uninstall/reinstall all the drivers and such that you need to. and if it just boots, and seems to work, uninstall and reinstall all the drivers.
In this case, I wouldn't expect it to BSOD, but it might since your switching Porcessor types. AMD and Intel use different interfaces so that might cause a problem. Then the MoBo might give you some fits with it's chips too. ..