I'm 5 feet but with a really short inseam for my height. I've got a 25" inseam, so I feel your pain. There are road bikes available normally on 24" wheels. Trek used to make a road bike I think it was called KDR 1000. They come up on ebay and craigslist. Felt also has one.

Another option other than the ones already mentioned by others is to look into a Folder like a BikeFriday. I have one of these and love it. Because they are on 20" wheels, the gearing can be a lot lower. If you don't prefer that, I'd get one with a Capreo hub and cassette which would help compensate for the lower gears the small wheels will give you. This is the setup that I have.