Really strange keyboard/mouse issue

Hi, guys. I recently purchased a new wireless keyboard and mouse by Digital Innovations after a horrific coffee spill on my old (wired) keyboard and mouse.

Very regularly...in fact, several times daily... the keyboard will suddenly start malfunctioning. Certain buttons will all of a sudden change their functionality for no reason. For instance, the issue I just experienced was that any time I pushed "1" (and this started in the middle of a mission, mind you), instead of executing the corresponding power in the power tray, it will bring up some Windows 7 function, asking me if I want to allow Microsoft to make changes to this computer, blah blah blah, which of course brings me out of the game until I click on the game screen with my mouse and go back into the game. Of course, now I can't press "1" or the same thing will happen.

The issue is rarely the same issue twice, however. Sometimes, in team play, "TAB", which I have set to highlight the nearest enemy, will instead highlight the team leader. This happened once for a period of a few minutes, then the issue went away. Most frequently, however, and this is most infuriating, I will all of a sudden lose the ability to enter text in the chat bar, which destroys my ability to communicate with my team. The only way to fix the issue is to reboot, which of course pisses off my team because I had no way to communicate that I was going to have to drop suddenly and reboot.

This happens regularly, and it seems to affect my mouse, as well, in that when I click on desktop icons directly after leaving the game with the aforementioned issues, the left click will suddenly act as a right click, etc. It seems to happen only in CoH, though that may be because I've been spending a lot of time in game since I bought them and haven't given it time to happen elsewhere.

Has anyone even heard of an issue like this? It's starting to make the game unplayable, and I don't really have the money right now to just cut my losses and buy another set of keyboard/mouse.

Any and all feedback is most welcome and greatly appreciated. Thank you in advance.

Crap. Okay. Thanks. I'll try to figure out the interference thing. I can't seem to locate the drivers, but I'll keep looking. I've written an e-mail to their support. We'll see what they say.