I've done similar with PowerShell and a table-list of SQL Servers, except that I use a table to iterate against in the script.  

Apologies if the formatting gets nuked...

[code]
## Get_Service_Info.ps1
##
## 05/11/2007 G. Rayburn <grayburn@collegeloan.com>
##
## This script will query a db to get a list of
## SQL servers on the network.  The table dbo.Server_List
## is populated by a job that runs an sp which executes
## "sqlcmd /Lc" and has logic to only update the table with
## new servers.
##

## Set common connection string:
##
$connString = "server=<ServerName>;database=<DBName>;trusted_connection=true"

## Get a network credential (pref. DomAdmin) for use against the servers:
##
$cred = Get-Credential

## Get a dataset of servers to check from the database:
##
$query = "SELECT SystemName FROM dbo.Server_List ORDER BY SystemName"
$dataset = New-Object "System.Data.DataSet" "MyDataSet"
$da = New-Object "System.Data.SqlClient.SqlDataAdapter" ($query, $connString)
$da.Fill($dataset) | out-null
$dataset.Tables[0].TableName = "Server_Info"
$Server_Info = $dataset.Tables["Server_Info"]

## Connection objects for INSERT operations:
##
$sql_conn = New-Object system.Data.SqlClient.SqlConnection
$sql_Conn.connectionstring = $connString
$sql_conn.open()

## Start up the loop and insert into the database:
##
foreach ($row IN $Server_Info.Rows)
{
write-host "Checking: " $row["SystemName"]
write-host

$colItems = Get-WmiObject -computername $row["SystemName"] -cred $cred Win32_Service -filter "Name LIKE '%SQL%'" -ea silentlycontinue

foreach ($objItem IN $colItems)
{
$SystemName = $row["SystemName"]
$DisplayName = $objItem.DisplayName
$StartName = $objItem.StartName
$StartMode = $objItem.StartMode
$State = $objItem.State

$insert_query = "INSERT INTO dbo.Server_Info
(SystemName, DisplayName, StartName, StartMode, State)
VALUES ('$SystemName', '$DisplayName', '$StartName', '$StartMode', '$State')"

$execute_query = New-Object System.Data.SqlClient.SqlCommand
$execute_query.connection = $sql_conn
$execute_query.commandtext = $insert_query
$execute_query.executenonquery() | out-null
}
}

## Close conection(s):
##
$sql_conn.close()
[/code]