when I try and open Steam, whether by itself or in order to play CSS or HL2, I get the following message:

Platform Error: bad module 'Friends/friendsUI.dll', not loading

Because of this I cant play any of the games run through Steam, which royally blows because I was going to buy the new orange box.

Anyone know what is causing this problem or how I can fix it?
Yeah try restarting... or of all else fails reinstalling...
I like your Christ; I do not like your Christians. Your Christians are so unlike your Christ.
-Mohandas Gandhi
I'll take the obvious route and say that friendsUI.dll is probably missing from the Friends folder (which is in the Steam folder in Program Files).

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Restarting didnt work, and the file is there. Would reinstalling Steam require me to also reinstall HL2 and CS?