Home button sometimes works, sometimes doesnt, How can I repare it?

The home button on my iPod touch 3G (32 GB) is semi functional, sometimes it works perfectly, sometimes I have to press the #%!% thing 5 times just to get it to function.

An example would be double tapping the home button to bring up the multitasking bar (iOS4) or when i had iOS3, to bring up the music notification.. Sometimes it would act as a single button press and exit which ever app im in, and sometimes it would work correctly, and even sometimes I could just press the home button once and it would act as if i pressed it twice..

I understand it may be placed incorrectly or something, would you be able to show me how to take it apart and fix it?

I cannot afford to send it in to get repaired at the moment, so this is the only alternative.

Thanks, I hope to hear from you soon!

I got the device a year ago, I didn't apply for futureshops warranty, would I be eligible to send it to apple?

It isn't too much of a deal, but sometimes I want to smash my iPod to a million pieces because it can be so frustrating lol.

I might just wait until I know there is a jailbreak for 4.0, I have shshs for my iPod touch 3G, which I don't want to lose, in case 4.0 for ipt3g isn't possible.