Wirelessly posted (BlackBerry8530/5.0.0.601 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)

I would not apply for any further credit cards for at least six months. You already have too many hard pulls over a very short period of time, and you're just digging yourself a deeper hole by continuing to apply for cards right now.

I would also look into taking out a "secured" consumer loan -- maybe $1,000 for six or twelve months -- secured by a certificate of deposit for a like amount. Some banks specifically offer these products to help people build up a credit history.