can i make money on my PC without any outlay

Certainly, if you have any talents at all head on over to
http://www.guru.com and park yourself there. It may take some time for
you to get customers, but once word gets around (and it will) you can
start making money. Companies have been built around that, then again
many people could have starved to death if that is all the income they
had. So, like with all else, don't put all your eggs in one basket.

another great place is rentacoder.com