hi guys..i've did some searching in the net about robot.txt

i found the generator and it generates out there

# robots.txt generated at http://www.mcanerin.com
User-agent: *
Disallow:
Disallow: /cgi-bin/

meaning i allow all the spider go to my website??or i need something like
"user-agent:googlebot
allow:/"

and can some one teach me how to write the proper robot.txt command

something like

User-agent:

Allow:/*

Still trying to make my site go up at least front few page. Heard some SEO companies out there can do the job but the charge is kinda high