Install of VB 2010 Express on multiple computers

I installed VB 2010 Express on 2 different computers using the same activation key. An XP machine and a win 7 machine. Is this is allowed? There is no FAQ and since its free I figured this was OK. Is there a Microsoft Certified person here that has an answer for this 100%?:afrog:

I don't think it matters. And I'm sure MS isn't going to care either way =/

It's probably more of a tracking thing than anything else.