I think you may have seen the "System Builder " ( confusingly also called OEM ) discs.
I believe they only have one bit version in the box.
The key you get with it will work with either bit version - you just have to get hold of the installation media.
The Retail versions will have both dvd's - but are ( usually ) more expensive than the System Builder oem versions.
I say usually because the introductory offers around now mean Retail version might be cheaper at the moment.
So it's worth looking into that.

Quote: Originally Posted by
ramunas
but if the company only gives 32bit disk, so how should i get 64bit disk, download warez or buy ?