|"i bough a 1gb ram and the vga card ati mobility radeon agp 4x 512mb which is ddr 2|
the asrock board supported only ddr 1 vga"
Apparently you don't understand how these things work. The system memory & graphics memory have nothing to do with one another, you can mix or match without any problems. The ASRock board will support a video card that uses SDR, DDR1, DDR2, DDR3, or DDR5. I don't know who told you differently but they were 100% wrong.
It's time to be blunt - the Zida board you bought is an outdated piece of crap. It's almost 10 years old, only supports 4X AGP, & does NOT support your CPU. And why would you even buy a video card based on a laptop (Mobility) GPU? The Radeon HD 3650 is NOT a good gaming card anyway. Sorry, but you made an all around bad purchase. It's seems you had enough money to travel 1/2 way across the world to visit London, so why did you "cheap out" when you bought the board & video card?
The ASRock board is only a few years old & I'm sure supports PCI-express graphics cards, plus it DOES support your CPU. Once again, I suggest you switch back to the ASRock board. Sell the crappy Zida board for $10-20 (that's all it's worth) & see if you can find a sucker to buy the weak Mobility based video card. Then use that money to buy decent gaming video card for the ASRock board. And remember, the type of memory used by the card has nothing to do with the board. Decent gaming cards use DDR3 or DDR5 at 128-bit or better, so keep that in mind when shopping for a new card. Cards that use DDR2 memory are slower & cards that use 64-bit memory are NOT gaming cards. This article should help you to make a good choice:
Best Graphics Cards For The Money: July 2011
If you can't find the hardware you want locally, order it online. It's usually much cheaper plus you'll have a much better selection.