Right now I am running both Bot pro and Cute auto poster. Both of these two services you can use ip rental. Or with bot pro you can use the proxy rotator. Right now I post 5 ads per PVA and per IP. I have found for me this is the right combo. All i can say is test test and then test again.
What works for one person Might not work for another.
The systems that I have running these bots. Have windows XP only no other softwar on the system
Each system also has its own DSL line connected to it as well.
Hope this helps some
brady