We use 2 programs which might be helpful to you.

1- Sony Vegas
2- Roxio Easy Media Creator 10

Roxio is priced at about $100.00, you can purchase it at about any office store like Staples, Circuit City, Office Depot, etc. The name is a little distracting because it's cheap, but it's really useful.

For Sony Vegas, you could pick up a copy for under $150.00 at the same places as Roxio.

If you get into bigger editing and what have you, then I would suggest Sony Vegas Enterprise (or Professional) edition but then your getting into a higher price.

I hope this helps you out.