problem on tacking ppc

I have purchase couples blog banner spot of my computer hardware store.
Is it possible to track those banner ? Because I really want to know which banner is helping me to earn $$$. I am planning to work on some PPC as well. like adword and yahoo. Is it possible for me to find out where is my customer from? My site written in cold fusion and is kind of old.
Please don’t suggest me to work on a new site. ( the data input will take up to 3 months )
thx

See original post by alan8888