If you have NT/Win2k machine, then you can launch labview built exe using DCOM. Here is example that tells you how to do that.
http://zone.ni.com/devzone/devzoneweb.nsf/opendoc?openagent&9208517E41C2B1B18625683A000CB86E&cat=9C6DF90777E5A78206256874000FA14E
Another one
http://zone.ni.com/devzone/devzoneweb.nsf/opendoc?openagent&20346814BACE06BF8625683A000C3C98&cat=46E7994B7483D781862567C300662667
A Rafiq