the chase has begun!!!

Hi,
I am abhishek (aa-bi-shake), people call me 'shake'....I am an aerospace engineer, jus completed my Masters.
I am not new to this forum but never could post anything cuz I felt I never have anything to write...I have been researching this forum for past 6 months to get resources to start studying. I was working for Federal Express as an intern and now I am working full-time for Gulfstream Aerospace Corporation. I am an international in United States and there are few concerns when U are in Aerospace industry and International and sometimes its very hard to get a job. While my job hunt was on, I researched the material and now I have a job and the material... I donno what i am waiting for to start my preparation. I wanna give 4 months to myself with a fulltime job to write Gmat. I guess I get nervous when I think of writing the complete test with essays, thinking that I am not prepared. Last time, i wrote a test without essays in starbucks, I got a 550 with people creating a hell on my side. Can anybody tell me, what prep. do they do b4 writing the first test. ????

Please help me take off....

Thanks!

shake...