Smegger

OK I have just bought a Vista system, due to my XP system dying on me ..... I have a few programs such as PSP, Dreamweaver, Office XP Pro etc that i bought for the XP system. Is there anything i need to know before trying to get programs such as these to run on vista, ie compatibilty, patches, whatever. Are there any major issues, would it be much simpler to remove vista and go back to XP ???? I simply want and need to run these programs for college. Any help greatly appreciated