Windows 7 Re-Install Question

I have an Acer Aspire laptop that I need to reinstall the operating system on. The repair partition is gone & there is no installation CD available. I do have the product ID which is on the bottom of the laptop...so is there a way for me to determine by the product ID key, if this product ID key is for a 32 bit or 64 bit operating system? Thanks
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wantabe2Asked:
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Jaroslav MrazConnect With a Mentor CTOCommented:
OS key is universal. If you have medium with both versions installer with chose the best of. But if you have more then 3GB memory 64 bit is better.
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Miguel Angel Perez MuñozCommented:
You can boot with any kind of live cd (linux per example) and access to C. If you have program files (x86) folder, your OS is 64 bit, if you have not, is 32 bit.
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