Vista Tutorial - SCOm 2007 agent problem

hi to all,

i have a problem with scom 2007 that i install it with sql 2005 on same
server (windows server 2003 with SP2) successfully but the agent cant install
well that if it succus install on remote server it appear on pending
management with status installation in progress and if failed it appear a
failed on pending management and i try the following :

1. set the action account and SK service and config account as domain admin
or local services account
2. Install a scom SP1
3. Reinstall a scom and sql server 2005
4. check a SPN on scom server
5.change a sql services running account
And the problem didn't solve yet
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Thanks

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Thanks