SIM and OVOW Integration problem

[Rem-8]

Hello.

I've installed HP SIM 5.0 SP5 and OVOW on one computer (Windows 2003), then installed SIM Agent on Unix-based ESX3 server to monitor VM's status.
Then I turned vmware01 (one of VM's) off and on. The message in SIM appeared as this:
Cleared System is unreachable vmware01 1/4/07 12:18 PM
Not cleared System is reachable vmware01 1/4/07 12:48 PM
This is ok. But no information was shown in the OVOW console.

All SNMP traps were deployed to the machine. Moreover, I can't create SNMP server type, as the machine is already configured as Windows 2003 OS system in the OVOW -> Nodes -> Add Node

The next thing is: How to create certificate for SIM? When I'm launching the Certificate Tool on my management server it says:
Error: No vaild certificate for WOLA-TEST.
Please execute the Get Certificate tool first or make sure the selected node is
a HP System Insight Manager server
Press enter to continue...

We're trying to enable good communication between SIM and OVOW but no luck :(