WinXP-Rights Problem!!!

hi, again i need your expertise advice in this matter. i was able to solve my user rights problem (such as reading usb thumb drive) by giving them the “Network Configurations Operation” besides “Users” rights; but was unable to solve another problem occurred like running an Intruments such as NEC Therma Tracer program…!!! Again, i do not wish to give Administrator rights; if possible; and if there is a solution for this. Thanks in advance for your quick response.