Office 2010 x64 with Excel 2003 x86

[PMKeates]

I want to be able to install Excel 2003 x86 and Office 2010 x64. I installed Excel 2003 x86 and then proceeded to install Office 2010 x64, and was told I can't do it.

Does anybody know a way around this? I have read online that I may be able to uninstall x86 versions, install x64, then just install x86 again after. Has anyone tried this, and if so, had any issues with that arrangement?

The machine is running Windows 7 Ultimate x64.

Thanks in advance!

 

[PMKeates]

Uninstalling previous versions of Office, installing Office 2010 x64, and then simply reinstalling the older versions appears to have worked fine.

 

[PMKeates]

I find that if I am developing an Excel sheet in a pre-2007 environment, Excel 2003 is by far the fastest and best, which is why I always have that to hand. I use Excel 2007 for most things as multi threaded calculation can result in certain calculations that I would have previously made in VBA run very quickly indeed as sheet formulae, and I have a particular application that I need to continue to support that I wrote in Excel 2007. I had to program in workarounds to deal with 2007's memory limitations that resulted in it taking nearly an hour to run. I think with Excel 2010 I could have cut that significantly, which is why I am interested in the 64-bit version.

I installed Windows 7 x64 and Office 2010 x64 on my Intel T7100/2GB RAM laptop yesterday, and it really does fly. Very impressed. No conflicts thus far.

More and more I find myself utilising sheet formulae to make certain complex calculations.