I replaced my brake pads (old ones were worn to the metal plate), and now the front wheel is squealing VERY loudly - people stop and turn wherever I go.

I read up online, and it seems this has to do with toe-in. From visual inspection it seemed that the front of the pads was touching the rims before the back, so I thought something else was going on. I reset the pads and cleaned the rims with alcohol, and managed to get the squeal to be a tad bit less loud, but it's still very much there. So I pulled the pads, and I saw that I was wrong and toe-in is all out of whack (for lack of a better term), with the back of the pads having a lot more wear than the front:

http://img85.imageshack.us/img85/5982/brakes1.jpg
http://img838.imageshack.us/img838/2021/brakes2.jpg
http://img52.imageshack.us/img52/8426/brakes3.jpg

So I want to set the toe-in properly, but I don't know how. I don't see any adjustment on the brake arms that would allow me to somehow rotate the angle of the pad, and I know I'm not supposed to bend them with force or they could break.

What to do?

Thanks.