on my proxy sites i have adsense just on the main pages... would it be ok it i put adversal or adbrite on my proxified pages?
yes, thats fine this way. but you might want to keep away from advertising on proxy org for a while and keep track of all the activity on your account until it settles down a bit. see more about recent proxy bannings in general adsense forum.
Here's an article that delusion posted up a while back to a similar question: http://www.freeproxytemplates.com/adversal-adbrite-proxy/