Hi,

I think you should start promoting your product yourself. How? First of all, don't think much about sales. I think you should concentrate on getting traffic to your salespage. Launch a PPC campaign on Adwords or Yahoo! Search Marketing to receive some traffic instantly. Then write articles and submit them to article directories for reprint. This way you will build backlinks to your website, more visitors will come, moreover search engines will start ranking your website and you will be able to receive some free traffic. Submit your product's affiliate program to relevant affiliate directories.
There is a great digitalpoint.com forum where you can get much information about promoting your website online. Just do something and don't stop

Have a nice day,
Egidijus