Help!!!! With Timing Chain!!! Need Help Now Please!!!!

[jorgensensc]

Please help clear up something for me! I have been playing hell with my timing lately and decided to take the plung and replace the timing chain (350). I got everything pulled off and am looking at the timing gears and chain right now (only took me 30 min. to get everything off, Dang I'm getting better). Anyways, I understand the whole line up the dots on the new gears idea, but here is where I'm confused:
Obviously the dots on the old gears aren't lined up. And with the gears being different sizes they rotate at different rates. How do I know where to line up the dots on the new set. The chain is really loose and I don't know if it skipped any teeth at any point. how do I know if I am putting the crank and cam out of time when I hook it all up. My truck has not been wanting to start lately and I put a new battery, alt, and starter on. It will start fine with a jump, even though my battery says fully charged.
I bought a cloyes true roller timing kit.
Please!! Any help would be greatly appreciated!!! I've got to have this truck running again in 3 hours.
Shawn