There is a youtube video in the link to help with installation, if you're running windows 8, just boot into eufi mode with testing enabled. And then run cmd promt as administrator and enter
"Bcdedit.exe -set TESTSIGNING ON" then go on you're way to sign the driver to the mouse in device manager, anyway it's in the video but he's using dseo which is windows 7 basically.
https://www.youtube.com/watch?v=KORL144_co8
This is a description of the GUI that kovakk made that comes with the driver made by povo. This is literally the best way to use accell I've ever found.