It would have helped if you had specified your software version, as requested on the form to post a new topic. I assume you're using SDL Trados 2007 Freelance. I also assume you're working with Windows XP.
I am trying to convert my excel dictionary into multiterm format, whereas i can not find "multiterm convert" in my SDL Trados Synergy 2007 window, though i have multiterm (i think i need to pay extra for multiterm convert , thanks to the marketing policy of Trados!),
You're jumping to conclusions - thing is, you've got it wrong. MultiTerm Extract is a separate application that requires a separate license, whereas MultiTerm Convert is part of the standard MultiTerm installation (again, you did not specify which version of MultiTerm - if any - is installed on your system).
is there another way to convert "without" using multiterm convert.
There's no need to: Go to Start - All Programs - SDL International - SDL MultiTerm 2007 - MultiTerm Convert. The process is described in section 3 of the MultiTerm User Guide.