Hi and welcome. Colleen's hubby is the tech expert so my recommendations are just based on what works for me

Personally I think the better you get to start with the less chance you have of outgrowing your system but as always it depends largely on your budget

and what you choose to spend money on affects what its worth getting for the other components.
Ideally:
Quad core processor
3GB RAM
512 Dedicated Graphics card
1 TB of hard drive space
Dual Layer DVD burner
If you need to compromise

Dual Core processor
2GB RAM
256 Dedicated Graphics Card
500MB Hard Drive space
DVD burner
HTH
