88963 Pixel Script Webpage

Required ASAP. I require a website as follows. Webpage has a protion that consists of a blank grid. Grid is 100 x 100. Pixels can be numbered in any way convenient to author. This grid is over an imaige of the same size. Each pixel can be purchase via Paypal. When Purchased, pixel becomes transparent to reveal part of the image underneath. When all pixels purchaed image is fully revealed. Each Purchased Pixel to Show Purchasers Name when cursor hovers over it. Unpurchased Pixels to Show 'Free' when cursor hovers over it. Need to keep database of Names, Email & addreess of all pixel purchasers, so need to get that data during purchase. All purchases and revealing of image to be automatic. This website will be offering prizes to persons purchasing pre-selected pixels so need to make sure we have easy access to purchaser details. Q. Can I have a rectangle pixel grid as that will work better with image to be revealed. (Not essential) What else have I not considered? Please educate me! Thanks, jamesart