Want To Install Windows 7 64bit But Have Some Questions?

If I have a 32 bit windows vista can i buy an upgrade disk for windows 7 or do I have to buy full install?

If I upgrade my PC from Vista to Windows 7 Will I be problems with some programs?

I upgraded my PC to Vista and every time I logged in I got the blue screen of death. So I had to reformat my computer to install Vista. Is it possible that this could happen by improving Vista to Windows 7 (Build 7100 RC)? Because I learned that Windows 7 is compatible with XP [...]

How many times can a Windows upgrade disk 7 can be used to install on a computer? You can also install some other?

I had no problem installing Windows XP itself several times on the same computer and other computers. However, this was an OEM version, rather than an upgrade version.

¿Cuántas veces puede un disco de actualización de Windows 7 puede utilizar para instalar en un ordenador? You can also install some other?

I had no problem installing Windows XP itself several times on the same computer and other computers. However, this was an OEM version, rather than an upgrade version.

Some disadvantages to the upgrade option for Windows 7?

I want to buy a new Dell laptop - whether an order now, I get a free upgrade to Windows 7 once it's released. Is there any reason to wait until I can get Win7 pre-loaded, or there will be no performance difference if you get the same hardware anyway?