my question is simple, what should Ineed to start with a gas engine? what should Iconsider when buying a gas engine? lets say that Iknow that Ineed a 22 cc engine, what else would Ineed? electronic ignition? special wires? additional channel on my radio? as you guys can see, Idon't know anything about gassers

Start here: http://www.rcuniverse.com/forum/m_8673009/tm.htm

ooops it was there  and I didn't see it, thanks.

No problem at all....now after reviewing all of that information, if you still have some specific questions you need clarified, come right back here to your thread and ask em.