Applying the Bonus Pack on UT3 purchased via Steam

[HARPER]

Thank you. Been looking all over to that.

FRAG ON..!!!!

[JimPanse]

steam install all 3rd party games into (your drive):\Steam\steamapps\common

[HARPER]

I have purchased my copy of UT3 via steam. How does one apply the UT3 Bonus pack to UT3 that have been purchased via steam.

I can not seem to find where steam has installed UT3.

My desktop short cut is telling me D:\Steam\Steam.exe -applaunch 13210

BTW, I am running Windows Vista.