Fallout 3 Expensions on STEAM

Hi,

I have a STEAM copy of FO3.

• Can I purchase addons like Point Lookout from GFWL Marketplace?
• Would they be compatible with my STEAM copy of Fallout 3?

Thanx.

yes ofcourse

I recommend to buy them all except, euh ..... mothership zeta Which is utter crap.

Thanks a lot.