1. You need to donate, *states the obvious*.
2. 3 Buttons RIGHT (--->) Of your keyboard, there will be a button which says "Prt Scrn" Which is an abbreviation for "Print screen".
3. Once you donate, you should receive an e-mail from one-bip, so open the message.
4. Press "Prt Scrn" (explained on #2)
5. Open Paint, to find it you will have to;
Start Button > All Programs > Accessories > Paint.
6. Once you have opened paint, press CTRL + V, this will "paste" the image you have taken with "Prt Scrn" (still explained on #2)
7. Go to tinypic.com / imageshack.us and upload the image. (Shouldn't be too hard, i can do it and i'm 11)
8. Once you have uploaded the image, there should be a special link towards it; Copy and Paste it onto your donation topic and wait for 1-5 days for your donation to be checked.
I hope this eases your problems with donations.
Working On: Proof uploading tutorial (All screenshots)
Edit: Ew, i hope this isn't late.