How can I get someone to read unsolicited pilot scripts?

A friend and I have written a couple of pilot sitcom scripts over the last few months, and now we're trying to get someone on board to help us get them off the ground. We've tried sending them out to agencies and producers, but a lot of them won't read unsolicited scripts. Does anyone have any advice for us, or would be interested in helping us out in any way? Cheers in advance!