Unless you enjoy getting a lot of spam e-mail, remove your e-mail address from your first post.
Your graphics card does require the 6-pin PCI-E power connector. Without that connector plugged into the graphics card, your PC will not boot up. If your power supply does not have the 6-pin PCI-E power connector, my first recommendation would be to replace the power supply as it's probably several years old to not have one.
However, I understand you're on a low budget, so assuming your power supply does have an available 4-pin molex power connector, you could use an adapter like this one