I think plugging yourself in various forums is one way to drive sales at your website. also (obviously) evilbay, etsy, craigslist.
I know that right now kontakt is pretty huge and just building your samples into that format would garner interest from a wider range of folks. Not everyone wants to hassle with setting things up.
Adding a kustom script with custom graphics and functionality is sure to get you noticed. Then toss out a number of demos on youtube.
Speaking of which, if I may shamelessly plug myself... I'm interested in building my portfolio as a "scripter for hire" so should you decide to go that route, toss me a pm.
also, get chicken systems translator and you can translate a created instrument into several popular software synth type formats.
