I can't design worth a damn, and I've never claimed that I can. I make things work someone else will have to make them pretty and intuitive. Obviously this stuff matters though, an interface designed by a developer, do not want.
I thought I'd have a play with 99designs and see how things worked out. My contracting company is called Mostly Monkey so I thought I'd omission a logo for the company. I like logos, they do a lot of explaining in a very small space.
I've gone for the cheapest version of the service, so far I'm quite liking the results that are coming back. Have a look and see for yourself.