If you have vb.net, you can do it as per *www.devx.com/dotnet/Article/7914. For earlier versions, there is a link in the above site to *support.microsoft.com/support/kb/articles/Q96/8/44.asp and *support.microsoft.com/support/kb/articles/Q129/7/96.asp which will give a roundabout way to run programs one by one...
Arun