Where to install SR?

Hi!

I've bought a new computer (hurray=) and re-installed 3ds max 2010.

I've made a mess and can't see where I installed SR last time! (followed video instuc.)

-Which rootfolder? (my computer has c:/program files and a 2n c:/program files (x86). Which one do I use to install programs?

-And which SR is best for 2010?

-Do i need to install vray before SR? And which folder do I install vray?

I can't seem to manage to re-install Vray - can I buy/ get vray from you?

Sorry, you helped me perfectly last year but can't find email correspondance with the instuctions!

Thousand thanks!

Kind regards,
Maja