Well congratulations on your new child, and good luck with everything!
As far as your PC, if your not gaming, you can really use a standard card and it should get the job done. As far as a budget is involved, if you'd like we'll all still be here once you know.
If you need more advice or anything like that, we're here.
As far as your choice to with socket 939, great choice indeed.
For example, if you ever wanted to upgrade the processor down the road, it'd be so much easier to do it with 939 than 754.. trust me.
Anyway, overall good luck.. and have a wonderful time with your new child.
And if you need any more help, as I said.. feel free to ask and everyones very helpful and nice here, so we'll all give you a helping hand.