The Radeon 3200 is going to pull low settings comfortably. I've heard mentions of it pulling the low side of medium...but uncomfortably.
You need to make up your mind -- the HD 3200, HD 4200, and HD 4240 are all onboard video chips, the first closely related to the HD 2400 design of four years ago, the next two being based on the HD 3450. All are slower than the discrete video graphics cards they were cloned from.
What about it? Can the video be upgraded? Nope. There's an integrated chipset in there and that is not going to be removed. (snip) the Radeon 4250 will be the weak spot.
None of them are any better than the (real, practical) minimum that this game actually needed, and the 3200 is significantly poorer.
If the HD 3200 was even as capable as an HD 2400, look at it compared to the official minimum Radeon:
http://www.gpureview.com/show_cards.php?card1=561&card2=54
That's a bad comparison, given that Bethesda never tested the X700s and X800s, because Omega drivers are needed with those. IMO, an X800 Pro was probably a better choice as a "Practical" minimum, same as a 6800 GS made much more sense than a 6600 GT.
The HD 2400 is roughly 30% as capable as an X800 Pro:
http://www.gpureview.com/show_cards.php?card1=561&card2=301
The HD 3450 is about 40% as good as an X800 Pro.
http://www.gpureview.com/show_cards.php?card1=555&card2=301
Gorath