i want to work on rentacoder.com like websites and such type of similar websites .
Please help me on these...............
1--Can anybody please help me that what minimum skills i do need to complete any project and earn something.
2--Secondly how someone who works on rentacoder.com etc get the money.......is it through credit card or something ..........i need to know as i live in a backward country.
3--Also please tell me that how much can i earn weekly or monthly through the website i mentioned earlier , being a full-time student of computer science BSc.

1) You need to be skilled enough to complete the project you bid on.
2) Last I checked it was almost always PayPal.
3) Probably not that much compared to a typical freelancer or salaried programmer. The price for projects will vary wildly depending on the complexity or difficulty, so if you choose well and bid well, you'll make decent money.