Sorry, I wasn't sure if I should address that in this post or not. I'll write another one about finding and validating a developer/designer/whatever. It's a mix of methodology and black magic...so I wanted to keep this post on-point for one topic.

For small things, I use oDesk. The PSD-to-HTML slicing and part-time developer were both found through oDesk. I've also found good help on oDesk for other things like audio transcription and data-entry.

I found my designer through Forrst.