The next thing you should setup if you're going to be doing coding for your UDK project is WOTGreal if you're using that for your IDE. I like WOTGreal a lot for UnrealScripting. If you put the WOTGreal directory into the root directory of your game project you can relative path the executable to the proper folders and classes. This way you don't have to change your WOTGreal settings every time you want to switch projects.
Here is my root UDK folder layout. Notice the WOTGreal folder.
In WOTGreal go to Options => Preferences and then Game Information.
Fill in the UCC.exe File, Game Root Dir, and Source Root Dir like so.
Once you fill this in, click Apply and leave the Preferences window. Then right click in the Packages section of WOTGreal and select the option "Refresh Class/Package Tree".