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EXCEL VSTO Compatibility for 2007 and 2010 as well as x32 and x64

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Last Modified: 2012-05-11
Hi

I need some expert advice.  I need to write a VSTO addin  for Excel that would need to run in both 2007 and 2010 as well as the 32bit and 64bit versions of each.  

From what I have read here - is this correct:

1.  If I don't target unique API's to version 2010 - that VSTO should install, load and work in 2007?  Is that correct?

2.  If I compile for "any code" - then that same VSTO dll should work in both 32 aqbd 64?  No?  Or will I still need a separate install for both?

Thanks in advance
VA
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