No one is going to help you to do such a thing sadly however I can tell you something , you are probably going to infect normal users with normal PC's and I don't think you will get anything from that even if it's 1000 slaves .
So if you don't want to end up in jail or something , you should work hard to get your Bitcoin legally instead of infecting people with crap.
Basically on Signature compaigns you advertise a website or a service on your signature on the forum , and the signature manager pay you for advertising just like Ads you see on website , it works exactly the same way .
However on this forum , each Rank have specific codes and colors limits that he can put on his signature . Overall , the higher rank you are , the better you see the signature .
Signature compaigns basically pay for members like Senior Members and above pretty good amounts , so what I would advice you is buy at least Full Member account and enroll on a compaign , check his for payout for each rank & for each signature compaign : https://bitcointalksearch.org/topic/overview-of-bitcointalk-signature-ad-campaigns-last-update-01-jan-23-615953