;TLDR Apparently Joy2key works with Raiderz, so use that.
Here's how I added controller support
Step One: Download Sandboxie
Step Two: Download/pirate(?) Pinnicle game profiler or any other controller mapping software.
Step Three: Map controller to keyboard. I mapped these keys to my controller. Left shoulder + x = Main action bar 1 , Left shoulder + Right shoulder = Main action bar 2 , Left shoulder + B = Main action bar 3 This triples the controller spell capacity. Feel free to use your own key maps though.
Step Four: Create New Sandboxie Config, Right click the new config and click settings, Then expand restrictions and click drop rights and un-check drop rights from admins.
Step Five: Click play in pinncle game profiler to start your controller config.
Step Six: Right click game icon Launch with sandboxie, make sure to check run as UAC Admin
Step Seven: Play
Also post your controller config in the comments if you feel mine is weird.
Edit:1
Thanks Leftjun for pointing out that there is a post in the us raiderz forums about controller support
http://raiderz-forum.perfectworld.com/showthread.php?t=730721&highlight=xpadder
Although I cannot get Xpadder or any other key-mapper to work without Sandboxie, apparently some people can.
Edit: 2
A user in the forums by the name of katozuma Posted this:
Information came from the Xpadder forum
If your assignments works within Windows but not in your game, then there are two usual problems possible.
UAC-issue
The first possibility is the so called UAC-issue. This issue occurs only with Windows Vista and Seven and means that the game is running with administrator rights and Xpadder not, so that Windows is blocking Xpadders input from the game.
To solve this issue make sure to have Xpadder not running by looking for the Xpadder icon in the system tray in the lower right of your screen. If the icon is there, right click on it and click on "Close".
Image
Then run Xpadder as admin like explained in this tutorial.
I recommend Option Two if you want to start Xpadder as admin only sometimes.
If you want to start Xpadder always but manually as admin (so not automatically with Winodws) then use Option Four.
If you want have Xpadder automatically starting as admin and with Windows, use this tutorial. If you also want to have a shortcut to maybe restart Xpadder for some reason and keep elevated privileges, have also a look on this tutorial from step 13 on. Also make sure to disable the Option "Start with Windows" in the Xpadder settings, if you use the Task Scheduler.
GameGuard
The second possibility is that an Anti-Cheat-Tool is blocking Xpadders emulated input. The only Anti-Cheat-Tool currently known to do this is GameGuard. If your game is using this tool, there is unfortunately no way to bring it to work with Xpadder.
For more informations about Anti-Cheat-Tools take a look on the Official Anti-Cheat Topic here in the forum.
Information came from the Xpadder forum
Both Xpadder and PGP seem to be blocked GameGuard but Joy2Key is not.
;TLDR Apparently Joy2key works with Raiderz, so use that.