Here is a slightly different version that doesn't require you to set the "total" variable:

$sVar1="String 1"
$sVar2="String 2"
$sVar3="String 3"

$iCount=1
While Execute("Exit VarType($$sVar"+$iCount+")")
 $sNull=Execute("$$sNewvar=$$sVar"+$iCount)
 "$$sNewvar="$sNewvar ?
 $iCount=$iCount+1
Loop