Windows Registry Again

[Michael]

Hello,
Anyone help with this idea as how to find a value below a RootPath in
the registry ? For example I'm attempting to pull all the network card
info put into a temp file sift through it looking for a setting, then if
setting is run the app if setting is not do not run app. 
I'm trying this but since the rootpath is empty i get of course empty,  

put queryregistry("HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlset\Services
\Tcpip\Parameters") into tpCheck

Thanks 
Michaeld