V4.0 Style on new 4.2 Install possible?

[ddjmagic]

I had my V4.0 forum hacked a few months back and lost everything, I had to start over.
I just installed V4.2 and I want to import my XML style that I used on V4.0, can this be done or will I get problems?
What is the best way to go about doing it?

Thanks for any help