How can I generate Windows Logs for testing purposes?

Well, not sure why EventCreate won't work for you. That will write to the System log. You could use PowerShell, which is pretty much the new answer for doing anything.

Stolen from http://winpowershell.blogspot.com/2006/07/writing-windows-events-using.html

$evt = new-object System.Diagnostics.EventLog("Application")
$evt.Source = "MyEvent"
$infoevent = [System.Diagnostics.EventLogEntryType]::Information
$evt.WriteEntry("My Test Event",$infoevent,70)