MacBook1,1(32-bit) to MacBookPro5,1(64-bit) 10.6.8 system slow starting

I've received a "hand-me-down" MacBook Pro (2008; 5,1; 64-bit mode) into which I installed a new and bigger drive. I used SuperDuper! to copy the Snow Leopard backup from my MacBook (2006; 1,1; 32-bit) to that drive and then partitioned for Windows XP Pro using Boot Camp Assistant (3.0.4,) then "restored" XP using Winclone 2.2. Two questions:
1. Do I have to re-install Snow Leopard to get the 64-bit capabilities? The machine is very slow to start up. When I turn on "verbose" it says 64-bit mode, but when I look in System Profiler I see "No" next to 64-bit Kernel and Extensions in Software. I also see appx. 50 "No" entries under the 64-Bit (Intel) header in Frameworks; Kernel, ManagedClient, MediaBrowser, and SyndicationUI show blanks.
2. The Windows XP system seems to have lost its drivers in the transfer. I can't even get it on the Internet. It wants drivers for Video Controller (VGA compatible), SM Bus Controller, Coprocessor, and of course Ethernet Controller. How would I go about re-installing them--or perhaps new ones? When I ran the Boot Camp Assistant it offered to download the drivers but when I said yes it came back and told me they were no longer available. Supposedly they are on my SL install disc (which thankfully I have) but that's all I know. The driver discs I burned in the past (for & with the other machine) are in storage a long way away alongside my Windows XP Pro install disc (which I hope I won't need.)
I would be grateful for any help and/or thoughts!

Yes, it's me (marikavs)--Apple's been messing with my head (and my user id.)
So I used the Snow Leopard disc to reinstall. Whoop-dee-doo. First of all it didn't even offer me an archive and install. I thought that wasn't supposed to go away until Lion. No matter. By the time it was done all my personal folders and aliases were still there. The machine is slower than ever! Both on startup and on launching anything. I looked in the System Profiler and don't see any changes. That doesn't mean there aren't any; I didn't look everywhere. But the "64-bit Kernel and Extensions" still says "No" and the Frameworks (in Software) still has plenty of No's under the 64-bit header and the four blanks are still there. I'm baffled, and it seems it was all a big waste of time. Does anybody know what that was all about?
As for the Windows drivers, not having a disc available to do a reinstall there, I tried the SL disc--in Windows! Lo and behold, the content is very different from what shows when you look at it in OS X. It does have a way for you to "Repair" the drivers. Only, it doesn't work. Sigh. I tried it twice. Still no Internet. When I try to bring up the Network Wizard nothing happens. Does anybody have ideas on what I can try now?
And yes, I have verified (with an Apple employee) that the Boot Camp Assistant does indeed require that you start over from scratch. You can't just only delete the existing Boot Camp partition and create a new one.

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