MySQL problem, can't launch OpManager 7

I've downloaded, for evaluation purpose, OpManager 7, from this page

I've installed it, and when I want to launch it, it begins to initialize then close itself.
I've found this MySQL problem in wrapper.log:

STATUS | wrapper | 2007/06/25 17:28:20 | Starting the ManageEngine OpManager service...
STATUS | wrapper | 2007/06/25 17:28:20 | --> Wrapper Started as Service
STATUS | wrapper | 2007/06/25 17:28:21 | Launching a JVM...
INFO | jvm 1 | 2007/06/25 17:28:21 | Wrapper (Version 3.1.1) http://wrapper.tanukisoftware.org
INFO | jvm 1 | 2007/06/25 17:28:21 |
INFO | jvm 1 | 2007/06/25 17:28:21 | This evaluation copy is valid for 59 days
INFO | jvm 1 | 2007/06/25 17:28:21 | inside addon check
STATUS | wrapper | 2007/06/25 17:28:24 | ManageEngine OpManager started.
INFO | jvm 1 | 2007/06/25 17:28:32 | taryIconProps {DefaultMenuItem=Status, ApplicationName=OpManager, Menu=[{Id=Status, DisplayName=&OpManager Status, RunProcess=ShowOpManagerStatus}, {Id=StartClient, DisplayName=Start &Client, RunProcess=StartOpManagerWebClient}, {Id=ShutDownServer, DisplayName=Sh&ut Down Server, RunProcess=ShutdownOpManager}], EnableIcon=images/logo16x16_green.png, DisableIcon=images/logo16x16_gray.png, ToolTipText=ProductName, MainProcess=StartOpManager}
INFO | jvm 1 | 2007/06/25 17:28:32 | application_name OpManager
INFO | jvm 1 | 2007/06/25 17:28:32 | startAndRun
INFO | jvm 1 | 2007/06/25 17:28:32 | menuName &OpManager Status RunProcess ShowOpManagerStatus
INFO | jvm 1 | 2007/06/25 17:28:32 | menuName Start &Client RunProcess StartOpManagerWebClient
INFO | jvm 1 | 2007/06/25 17:28:32 | menuName Sh&ut Down Server RunProcess ShutdownOpManager
INFO | jvm 1 | 2007/06/25 17:28:32 | setProcessInProgress true
INFO | jvm 1 | 2007/06/25 17:28:32 | Windows XP
INFO | jvm 1 | 2007/06/25 17:29:04 | Unable to start Mysql daemon
INFO | jvm 1 | 2007/06/25 17:29:04 | Unable to create database Exiting OpManager
STATUS | wrapper | 2007/06/25 17:29:07 | <-- Wrapper Stopped

I can't find a Mysql service in Services.msc (but I see ManageEngine OpManager service, stopped, and ManageEngineOpManagerApache, started)

Is there a problem with MySQL installation (I've checked MySQL bundled during OpManager installation) or is there a problem with my computer?

I'm running Windows XP SP2, and there is no permissions problems as I'm domain administrator.

Thank you for your help