Windows 7: Automatic sound repeating software that will work as a notification

Hello everybody
I would like to make a note, but I want it to be only in a sound form. I want that program or some kind of script play a chosen sound every 1-2 hours, and I don't want any window to pop up, just a simple sound. I want everything to be in a background, no interruption.
I did that once with Autohotkey, but punkbuster would kick me from the games, which is a big minus. Also, I want that runs within a startup
Thanks in forward
Sorry for bad English

bump?

OK, thanks for all suggestions.
After considering of what you have said, I found the best solution to my problem.
I used AutoIt, which is something like autohotkey, but have a lot of other function, and it is BASIC looklike
So I programmed well and compiled it to exe file.
It worked like a charm with BF3, but just for precaution, i opened exe in HEX editor and replaced all AutoIt text with DuckIt for less opportunity that PB detect it as "disallowed program".
Thanks again

I'm glad you solved your problem, I'm assuming that apparently no one else here needed to to what you have done or did not know how to do it is why you did not get any responses.
Sorry

No problem :P