Received my Windows XP x64 CD from Acer Tech Advancement program 2 days ago. Installed it on my second partition, then all the 64 bit drivers without glitches. After booting up i found all the peripherals working. Sweet.
I proceeded to install aVast Anti Virus, WinRAR & Nero and they are working as expected.
Instaled 3D mark 2005 and ran it, GPU score is 2353 (compared to 2342 in XP 32 bit).
Installed tweaked ATI driver from NGO and immediately saw improvement to 2368. Using ATI Tray tool I then overclocked the GPU to 390:375 just for the sake of it. Wow! Final 3dMark score is 2542

I like my laptop cool so then i proceed to undervolt my Turion. Bummer, RMClock is not working

After google a bit i obtained
CrystalCPUID
and found it though is not as slick as RMClock but its working. I end up setting the Auto Management features to 10 - 1.325(Max) and 5 - 0.950(Min)
I'm a bit overwhelmed at this point because i didnt expect installing Windows x64 bit can be this easy on this machine.
Now if only i can find a good Firewall program to replace this sucky Windows Firewall...
I'm going to install some games and test some more but im convinced pretty soon i'm going to get rid off Windows XP Pro alltogether and there'll be two partitions in my Ferrari. First is Windows XP x64 and the 2nd is Linux x86_64 =)
Goodbye 32 bit OS