John, You must have selected a "yes" when you should have had a "no". JK has two different installers (depending on what games you have). I have 72 games from there and I have NEVER had any toolbar install.
Now Jenkat does have a screwy install setup that I have been trying to convince them to change but no other software and no browser opening at the end. The install gives no choices for the destination but puts part of the game in Program Files (x86)\<gamename> and the rest in Program Files (x86)\Common Files\<gamename> (if using 64 bit, ignore the " (x86)"). If they insist on Program Files, they should at least make a "Jenkat Games" folder there and put the games all together and as for the split into 2 parts -- I have NO idea what that is supposed to do.
I merge the two folders into one (Cut the "Common Files" folder OVER the "Program Files" folder) and then move it elsewhere. I then use CCleaner to easily find the uninstall registry entry and modify it to point to the new location and then create a new shortcut.
It's a headache but my Program Files (x86) is cleaner and less cluttered.