check out these sites for tuts on : how to make a *.pk3 file. :
http://www.planetmedalofhonor.com/map/
http://users.1st.net/kimberly/Tutorial/index.htm
You need pakscape to make a *.pk3 file...but you will allready know that.
The easiest way is to make a *.pk3 with just the *.bsp file. Open pakscape----->new file----->make a new folder named: ´maps´--------> in that folder make another folder: ´dm´---------> in ´dm´ right click your mouse to insert files: insert *.bsp-------> done
Butthe...check out the sites...they are easy to follow cool:
good luck