IIS 6 to IIS7

Hello Guys,

I have website which is currently running on IIS6 (Windows server 2003, 32 bits).

Now we are going to buy new server with IIS 7 and I have to move my website on to IIS7.

My current website is developed using Classic ASP and COMS.  

What I want to know is, what kind of plugin (or addons) do I need to run the 32 bits application on 64 bits windows.  

Can I use the same DLL files which were used in 32bits windows to re-register in new Server with 64 bits??

Thanks.