jstart.exe not starting in the SAPMMC - Forgot admintrator's password

hi,

Presently i am working in CE 7.1 -trial version.

I started my SAPMMC today. I forgot my administrator's password so i was unable to login into the portal. Then i activated the Emergency user. Logged into portal as SAP* and changed the administrator password. Then i logged off. De-activated the Emergency user from the Configtool and set the administrator password from the secure store. Then i restarted the SAPMMC. However after this jstart.exe would try to start but it would stop after certain no. of seconds. Hence i am unable to open SAPMMC and since i still dont know administrator password i cannot unistall.

Please help........

regards,

pinki