More advice:
Like Shelley said, I would try to work on your spelling and communication skills. The image you put forward may affect your attendance. For example, if you had to travel a distance for a competition, which one would you rather go to:
"There will be a Rubik's Cube Competition in Houston, TX on June 7th. It will be held at the X. The competition starts at 9:00 and will go to 5:00. For the full schedule and registration, please go to the website ....."
"i am having a competition on the 7th. lol. it's at the someplace in houston. it starts at 9. webiste is...."
Here's what you need to do:
1. Find a venue. Here's some suggestions: Try your school. Do your parents work somewhere that might have a space? Hotel meeting rooms are usually available for rent. Science centers are also a popular place. I use my church. They provide the venue for free (I give them a donation, but it's much less than a hotel would be). They have a large meeting space that works out well. You may not want to single out a single date right now, but maybe see which dates the venue is available.
2. Make sure you're able to get some judges/scramblers. You can always ask for volunteers later, but make sure you have a minimum number to at least be able to run the competition. See what their availability is.
3. Find a WCA delegate. Here's is a list of existing delegates
http://www.worldcubeassociation.org/node/316 Now, it's possible that you could have a new WCA delegate for the competition. I believe the WCA strongly encourages the WCA delegate to have competed in a competition before.
4. Make sure you're able to have Stackmats available. While it isn't required by the regulations, you'll want to have the tournament displays, since they add to the excitement of the competition.
5. Finalize the venue date and get it secured.
6. Once you have the venue, equipment, and officials, e-mail the WCA to get the competition to be official.
7. At this point, you'll want to announce the competition.
Since it's the first competition in the area, you may not want to overschedule events. If you have 8 events, it might be hard to pull off if you have a bunch of competitors. Like I told you on the WCA forum, the number of officials, competitors, stations, venue time, all factor in to the number of events you can hold.
But yeah, how do you expect people to pre-register if you don't even have the date definitive? People don't want to make travel plans and then discover they're going to be competing unofficially in your basement. Also, your advertising has extended to what, this forum and that's it?
Once your competition is official, then go ahead and advertise. Some people might discover it on the speedcubing.com, through Facebook, maybe a newspaper ad. Some people might be notified through the grapevine. But this will only occur after the competition is official.