Just follow the advice on the forums. In a little over a year and a half I was able to go from a 456 to a 702.
PFD was the biggest thing for me. I had 12 collection accounts on TU And Efax. I was able to work out pay for deletes on all of them. A couple of the CAs did it without me having to ask. AT&T and a doctor even allowed me to pay them directly and then recalled the collection notice from the CA. For att I had to ask to speak to a manager in accounts receivable to work it out. She was very nice and helpful.
My Wallet: Amex BCP $19.5K | BOA Cash Rewards $15K | BOA Better Balance $10K | Cap One Venture $10K | Cap One QS $3K | Chase Freedom $4.5K | Barclay Rewards WMC $5K | Citi Simplicity $8.4K | Discover It! $2K | Huntington Voice $5K | PNC Cash Builder VS $17.5K | Total Rewards VS $12K | Sams Club $7.5K