It is not really wise to use both dual-core timing issue fixes.
Dual-core Optimizer is available on AMD website under dowloads section.
Microsoft fix is here:
http://support.microsoft.com/kb/896256.
Also I don't understand it when ppl say that getting C2D rig is the only futureproof option. All existing AM2 boards will support 65nm and 45nm K10 processors.