I cant get Micrsoft Document Imaging (MDI) Printer Installed on Windows 7 64bits

Hi I need some help... recently I bought a new Toshiba laptop which came with Windows 7 64 bits OS.

I was using Windows Vista 32 bits OS on my old laptop and was runing Office 2007 including MDI for printing documents to file in an mdi format. When I loaded Office 2007 on my new laptop (64 bits OS) I can only use MDI for viewing existing files .. it does not appears as a printer in the Printers lists. From all the readng I have done it seems that MDI printing has been omitted by design by Microsoft on teh 64 bits platform. Is this correct? or is there a way I can install the MDI printer driver?

Separately, if I cant get MDI to work on 64 bits OS then how can I go about changing my Windows 7 OS from 64 bits to 32 bits .. noting my Windows 7 OS 64 bits came loaded as OEM.

Thanks for any help and suggestions in advance.

the MS Office Document Imaging Writer is not compatible with 64-bit Windows and is disabled.