Regrowing the hairline is hard. Your's kinda look like mine. I would love to regrow mine too. It's possible for some, but normally you should aim for maintenance, and consider any regrowth as a bonus...
But you probably already know what everybody is going to tell you:
1)Proven treatments (big 3: Propecia, minoxidil, nizoral shampoo)
2) Patience.
3) Take photos to monitor your progress.
But read around the forum. You will want to know what starting a regimen like that implies. Risks are small, but real. Price and commitment are other factors to consider.
Good luck