how can you tell what version an XLS is?

>>We just upgraded our servers to 2008 running Terminal Services 6. Now when we try to execute import from xls we get the following error. The same command works fine on 2003 server with the same XLS file. I’m looking for any suggestions.
>>
>>

>>IMPORT from [c:\OhHand.xls] xls
>>

>>
>>We are getting this error:
>>
>>

>>Microsoft Visual FoxPro 9.0 SP2 has stopped working.
>>
>>Files that help describe the problem:
>>  C:\Users\mazar\AppData\Local\Temp\WER6BFD.tmp.version.txt
>>  C:\Users\mazar\AppData\Local\Temp\WER7CDF.tmp.appcompat.txt
>>  C:\Users\mazar\AppData\Local\Temp\WER7D0F.tmp.mdmp
>>

>__
>Mike,
>
>vfp9Sp2 cannot import any excel file above version 'Excel 5.0/95'
>
>When you append from (what I tested) any version above, vfp hangs (stops working)
>
>Solutions
>(1) Via automation
>(2) via automation save as ... in 'Excel 5.0/95' format, then import
>(3) make sure you get an excel file in 'Excel 5.0/95' format