will radeon hd ati 6500 graphics card produce all 3 output?

<span id="INSERTION_MARKER">Please say that again and this time, before you post, just read it back, real slowly, to yourself. If it still makes complete sense (and try to read it as though you know nothing about what the person has written) then click the Post button.

I have read what you wrote, several times now and I am not sure what you mean.
But here are some points:
1) The order of preference, to have video connections, would be
1st) HDMI,
2nd) DVI, and finally
3rd) VGA.
There is also a less popular "Display Port" that some monitors and video cards may have, but in my estimation I would put it either at the same level as DVI - or slightly below DVI, only because it is less popular.

2) If you can directly connect any of those connections, 'same-to-same', then go with that. Using any converter is asking for either problems, or something that amounts to less than what you would get with that 'same-to-same' connection.

3) If your video card can output two, or more, completely separate video signals, to effectively have a broader or expanded desktop, then that would be up to two limiters.
One being the possible capability of the circuitry of the video card itself (and that is made by the card manufacturer), and the second being the capabilities of the video driver.
Of course the video driver can never get past the circuit/hardware limitations of the video card, there could be some features of the video card that are not being properly utilized.
You might think that the manufacturer's driver would be the absolute best, most capable driver - and usually that is right. But sometimes, ... SOMETIMES, a video driver created by some knowledgeable hacker/hobbyist might just create a more capable, more featured, driver for that same video card.

How anyone can know who/which/what video driver to use is really, mostly learned by you by either reading reviews of where these drivers can be found OR by you just trying out each one you can.
Good luck with that, and be prepared to "roll back" to the previous video driver if things go astray - highly likely, but not the problem you might think it to be.
Windows 7 and Vista have some very good "roll back" capabilities. They can be your friend.