$ObjUsrCom = new-object -ComObject UserAccounts.CommonDialog
$ObjUsrCom.Filter = "VBScripts|*.vbs|Text Documents|*.txt|All Files|*.*"
$ObjUsrCom.FilterIndex = 3
$ObjUsrCom.InitialDir = "c:\"
$InitObjUsrCom = $ObjUsrCom.ShowOpen()

If ( $InitObjUsrCom = $False) {
    write-host "Script Error: Please select a file!"
	}
	Else {
	$filename=$ObjUsrCom.FileName
    write-host "You selected the file: $filename "
}