Itunes does not recgonize that 64 bit allready installed!!

[smooth65]

Hi all. I'm at the end of my rope here so maybe I can find and answer here. I'm attempting to re install my current firmware (4.3.3) and re jailbreak. I have blobs saved via tiny umbrella. Each time I do a shift/restore the process goes normal and just before the end I get an error (1) message. What is this? Also I Have Itunes 64 bit installed which is required with my on my laptop but when I plug into itunes, it ask me to uninstall and re install the 64 bit version of itunes. Im totally confused over this. I have tried a different computer, different USB ports etc. Any suggestions please? Thanks