Home button not working: found the problem but can't solve it

I cracked my iPod Touch 2G screen, so I decided to buy a new digitizer. I installed it without problems, right tools etc. When I completed the replacement, I found out my home button wasn't working anymore. After houres of trying and searching, I slapped my face when I found out what was wrong. On this picture:

http://imageshack.us/photo/my-images/19/...

you can see what part I'm missing. It's a tiny golden spring, responsible for the home button. Reason I slapped my face: I actually saw that part on my desk, didn't think it was anything important and threw it away. There is no way of retrieving it. So, thanks to this, my 280€ iPod is not working, also stuck on white screen of death, all because of a liiitle gold spring.

My question: can I fix this? Can I replace this part?

Anyone who can help: Thank you very, very much.