This happens in SP too. To jump out you have to be going fairly fast, not holding down on the acellerate key. If you move too slow you won't jump out, no matter what (R* probably did this because it was too easy to dive out of a car by mistake, when you meant to get out when you were done stopping).
Well, first of all make sure that you're trying to connect to a real server, and that the server isn't down or anything. Second of all, tell us what OS you're using
You have to submit your site idea to them, and they'll decide if it's worthy or not. Assuming it is worthy, then IIRC it is free.
Of course, MTA now has wojjie hosting them, so no need to find a host any more =)
Might want to get some more RAM (512MB)... Not really sure of how much RAM Vice City requires...
Assuming you have a decent video card, you should be able to run VC fine (I've run it on a GeForce 2 ti200 and a 900mhz machine; without having to lower the graphics quality by too much, and use a GeForce 3 ti200, 1.4 ghz machine usually).