i am using free avast, i am gonna upgrade, which should i upgrade to, pro or internet security. they both look good, but not sure what one to use. i dont bank on line, or dont shop on line either i use a credit card on facebook only time i use credit card, i want good protection. facebook is having alot of hacker problems, which one would you recommend? thank you
Its purely a decision for you to make but imo if you dont already have a good third party firewall and your using your credit card on facebook :o i’d go for the full suite AIS
okay, thank you thats what i thought, i dont know of any firewall so to be safe i will use the best
N P’s 
Another consideration is what OS are you using? If you are using Windows Vista or W7, then there is a good firewall built-in. If so, make sure that the built-in firewall is activated and Avast Pro should be good enough.
On the other hand, you can also deactivate the built-in firewall and use AIS which could be better.
If you are using Windows XP-SP2 or less (hopefully not less), then it would be best to use AIS.
And yes, if you are using XP-SP3, there is a firewall but I do not think that version is good enough and would suggest deactivating it and using AIS.
By the way, you should not have 2 or more firewalls active at the same time.
I hope this information helps you decide your needs.
PS - I would never use a credit/debit card on Facebook. That is just begging for trouble.