Can I get listed in Google in less than 24 hours?
Yes, but don't use the manual submission service by Google. Instead, get a site of PR6 or higher link to you. You can do this by purchasing a link on a PR6 site from the text link broker below for about $100:
$100 is the price you pay for 1 month's linking. After the period ends, you may choose to continue the linking or not. Anyway, your site is already indexed in Google's databases.
With a PR6 site, Google would generaly index your site within 24 hours. The higher the PR of the linking site, the quicker you get listed.