I did this and it's now running at a speed of 1.21 Mkey/s, it should be finished in 3150 years... I noticed that it's mostly taking all of my CPU memory though, so it's not working with my gpu's?
Haha, sorry I can't help much since I know nothing about this myself but sounds like you are gonna have to wait a while.

How many letters did you choose for the address?
1WTFisThis

With 9 characters (WTFisThis) after the 1, you'll find a matching address on average 1 out of every 7,428,000,000,000,000 addresses that you generate. Of course you could get lucky and generate a matching address in your next attempt, but you could also get unlucky and generate 15,000,000,000,000,000 addresses before you find a single matching address.
Good luck!