You'll find licensing errors with the mswinsock OCX if you try to use it on a machine without development tools installed.

The best solution I've found is to run IPCONFIG (as mentioned earlier in this thread). You can avoid the DOS window this way:

loWSH=CreateObject("Wscript.Shell")
if vartype(loWSH)='O'
loWSH.run("command /c ipconfig > "+lcTempfile,0,1)
if file(lcTempFile) &&read the file and parse it
lcRetVal=upper(filetostr(lcTempFile))
lcRetVal=substr(lcRetVal, at('IP ADDRESS',lcRetVal))
lcRetVal=substr(lcRetVal, at(':',lcRetVal)+2)
lcRetVal=substr(lcRetVal, 1, at(chr(13),lcRetVal)-1)
endif
else
lcRetVal='Can not create windows scripting host object - is WSHOM.OCX installed?'
endif

It requires that Windows Scripting Host be installed however.

Mike