Okay, if I am you, I would consider to seriously change webhosting company. If you want to use a shared hosting before going dedicated, I would suggest you to sign up for
Naked Hosting immediately. Buy yourself a one or two year plan, you will save some money. I'm hosted with them and I know the scripts will work without issues. Afterwards, since you are rather lacking of knowledge about how everything works, I would suggest you to buy
TGPX from
JMB Software instead of using Vanilla TGP because it is more simple and user friendly. Vanilla is more complicated to use. It is also simpler to install compared to Vanilla, at least, for a beginner that is otherwise it doesn't really make a difference for a more experienced webmaster.