should use 32 bit

Hi,
Firstly, the download for the 64-bit says its about 13mb lol, so dunno whats goin on there.
Secondly, will I be "safer" using the 32-bit version as a lot of my programs are older and I dont want to mess about re-installing XP etc... becuase half my drivers or programs wont work lol. ???
Also, my HDD isn't massive. If I installed Vista on a seperate partition, will I get a message asking me which OS to use when I boot up? and if I choose vista will I be able to access my documents etc...as I would normally with XP? Or can I only have one OS?
Cheers,

Hello :)

Firstly, the download for the 64-bit says its about 13mb lol, so dunno whats goin on there.

That's not good.

Secondly, will I be "safer" using the 32-bit version as a lot of my programs are older and I dont want to mess about re-installing XP etc... becuase half my drivers or programs wont work lol. ???

Yes, 32-bit is safer. I also recommend you download the tool that Microsoft has on its Vista website to check and see if there will be any compatibility problems. Upgrade adviser, I think it's called.
And you should uninstall any security or antivirus software before installing Vista ... and then install a Vista-compatible antivirus software after the upgrade, if you choose to upgrade.

Also, my HDD isn't massive. If I installed Vista on a seperate partition, will I get a message asking me which OS to use when I boot up?

Yes

and if I choose vista will I be able to access my documents etc...as I would normally with XP? Or can I only have one OS?

You will not have any trouble accessing your documents ... however, they will be read-only by default. There are 2 ways to get around this, the easy (less-secure) way, and the harder (more-secure) way. If you choose this path, I can give you more info.
My suggestion: Install 32-bit Vista to a seperate partition.
- JB