Are you suffering from a really runny nose in general, or is it just that you’ve got a lot of <ahem> boogers in there? If it’s (2), you should know that rummaging around in your nose with a kleenex wrapped around your finger to clean it out actually only makes it worse. It irritates the delicate nasal membranes up in there, which of course causes even more mucus to flow. If they’re bloody boogers, then that confirms what’s happening. Try leaving your nose alone for a couple of weeks–just blow it, and wipe off the outside, but don’t poke around in there with kleenexes.
If it’s just a really runny nose, my #1 guess would be allergies. Try taking some kind of over-the-counter antihistamine for a week or two and see if it stops. Dimetapp is the least powerful and least likely to make you drowsy, then Chlortrimeton, then Benadryl, which will knock you right out if you’re like most people. All three of these are available in a generic or house brand (Osco, Kroger, Wal-Mart, etc.) for half the price of the brand-name.