Hey Donna,
First of all--welcome!
Projecting your first sale is a mystical task. Depends on a ton of variables--your visibility/rankings in engines, popularity of products, credibility of the site...etc.
Hopefully a sale will come soon--and many more.
Sorry to say that there is no firm answer. From experience, we launched our first ecomm site in (or around 1996) and waited about 6 months for a sale; but things are much, much different in todays game.
You might want to post in the review area to get feedback on the site. I took a quick look and I think that some feedback might help. Id love to provide some, but Im running to catch a flight. Here are some very quick tips:
>Site is out of standard size--scrolls right considerably.
>"Disclaimer" might be a detriment for SEO reasons
>Header background doesnt fit header size
>Google ads in your most valuable real estate (top left) might be a turn off
>HUGE fonts in center content area (all different colors) might not be the best choice
>Nav text changes size on mouseover
>Replace live contact link (and HUGE text) with a contact form
>Add a "text/keyword" rich "about us" page as a primary link
>Rotating "specials" gif looks "dated"--might want to add more products to the home page with rich text
...calling my flight; gotta run!
Hope some of that helps (sorry if you were not looking for feedback, but thought it might help!)
Again, all the best luck with it.