My former employer used Concur for expense tracking, which included imaging software and was super-easy, but I don't think it'd be much use for a single user to track personal expenses. I've read some good things about Shoeboxed. There are lots of expense trackers out there, I'm sure you can find something that will work for you with a little Googling; I'd start with the big names like Quicken and Mint.com and see what works for you.
VP, Research & Development
This information does not constitute tax advice and is provided for informational purposes only. Please consult your tax advisor, financial advisor, local taxing authority, and/or plan provider or sponsor for more information.