ReadProfileString($inifile,"","")
Returnes a string with all sections in the inifile, separated by Chr(10), AND ending with Chr(10)

If only one section exist the returned value by:
ReadProfileString($inifile,"","")
is the sectionname + chr(10)

You could try using this:
code:
$inifile="T:\groups.ini"

$s=Split(ReadProfileString($inifile,"",""),Chr(10))
For Each $x In $s
	If $x
		$y=ReadProfileString($inifile,$x,"Group")
		$z=ReadProfileString($inifile,$x,"Team")
		
		Use x: "\\datl003n\Corporate"
		
		MD "x:\"+$y+"\"+$z
		MD "x:\"+$y+"\"+$x+"\"+$z
		
		Use x: /delete
	EndIf
Next
-Erik