A Dell XP Home SP2 CD, can I use it to install XP on a Dell with a valid XP Home SP1 license?

I know I tried to do it with an IBM but it didn't work, this is an OS install disc not a restore CD; I'm pretty much wondering if it'll just check that it's a dell and OK it without having to input a product key


If not... can anyone point me to a place where I can procure a CLEAN copy of a dell OEM XP install CD?