Before anyone moans I did do a search 
Unfortunately, the results conflicted so here I am.
I have just purchased an Asus laptop that came installed with Vista 32 bit Home Premium. First thing I did was format and install my copy of Vista 64 Bit Home Premium, using the laptop provided key. Activation was fine and is working perfectly.
As I bought the laptop I am entitled to an upgrade to Windows 7 (£17 P+P my ****). Anyway, after completing the form I am entitled to a 32 Bit Windows 7 Home Premium and unable to select the 64 bit version. If I decide to get the upgrade can I acquire a copy of Windows 7 64 Bit Home Premium elsewhere, install that and use the upgrade key from Asus?
Thank you, as I said previous threads conflicted so would like a definitive answer.
Cheers.

Unfortunately, the results conflicted so here I am.
I have just purchased an Asus laptop that came installed with Vista 32 bit Home Premium. First thing I did was format and install my copy of Vista 64 Bit Home Premium, using the laptop provided key. Activation was fine and is working perfectly.
As I bought the laptop I am entitled to an upgrade to Windows 7 (£17 P+P my ****). Anyway, after completing the form I am entitled to a 32 Bit Windows 7 Home Premium and unable to select the 64 bit version. If I decide to get the upgrade can I acquire a copy of Windows 7 64 Bit Home Premium elsewhere, install that and use the upgrade key from Asus?
Thank you, as I said previous threads conflicted so would like a definitive answer.
Cheers.