Hello PULINC,
If you run Windows 7 Professional or Ultimate version, install Windows Virtual PC and Windows XP mode (http://www.microsoft.com/windows/virtual-pc/default.aspx) and execute your software in Windows XP.
If you run Windows 7 Home Premium, try VirtualBox (www.virtualbox.org) or VMware Player (www.vmware.com) or any other 3<sup>rd</sup> party virtualization software and install a separate copy of Windows XP (either Home Edition or Professional) for that purpose.You can find virtualization software free of charge that will run on Windows 7 Home Premium.
Hope this helps,
Sincerely,
Marilyn
Microsoft Answers Support Engineer
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