1 What do I need to do prior to the change so that Vista (ultimate) will
smoothly accept the hardware changes?
Well, not much, the operating system should readily accept the processor
change, there is a likely possibility you might have to do a repair
install. Just make sure you backup any important data before making the
change, now would probably be a good time to take advantage of Vista
Ultimate's Complete PC Backup utility.
2 If I decide to go to 64 bit (installed clean on a new hard drive), will I
still be able to read my old hard drive?
Yes, if you setup the old drive as a slave you should be able to read the
old one, you might have to take ownerhip of files and folders before
accessing them though.
3 Are there any reasons not to go with 64 bit? (I read the commonly asked
questions and did not get satisfaction)
Stick with 32 bit Vista, mainly for compatibility reasons, such as device
drivers and the majority of most software you are likely to run will do just
fine with Vista 32 bit and 4 GBs of RAM. Vista 64-bit true power lies in its
ability to address large amounts of memory beyond 4 GBs, since the buck
really stops at 4 GBs for 32 Bit Vista. There have been performance test
that yes prove that Vista 64-bit performs good with 4 GBs or more RAM but
then again, there are trade offs such as compatibility which I previously
mentioned.
Some other nice features of Vista include all device drivers must be signed
before they can be installed on the system, Patch Guard which prevents the
OS kernel from be patched or altered by third party software. So, there are
some try security benefits there too.
Here is a great article read about 32 vs 64 bit Windows.
http://www.windows-now.com/blogs/km...bit-vs-64-bit-which-one-is-right-for-you.aspx