Just some wild suggestions here... some may have been already stated and not all maybe relevant or practical in your specific case but hope they help;
* Submit your service to Magazines/online articles for feature inclusion
* Submit to other typical users of your service
* Submit to relevant competitions
* Do up some flyers, brochures, laminates, business cards etc. yourself
* Make alliances, partners with established vendors/services to sell your product/service
* Submit to Free online classifieds and link listings both locally and globally such as
http://dublin.craigslist.org etc
* Submit your service to an online article submission sites i.e. you write an article that others can use in their ezines or on their websites and in exchange, they give you "credit" at the end of the article in the form of an "author bio" or credit paragraph.
* Post to forums but oly if your service can provide value to the discussion (include your website or company name in your signature line).
* Ask for referrals and testimonials from your satisfied customers. praises your product or service, ask them to refer you to their friends and associates. Ask them to write their opinions do
* Educate your current customers using tip sheets, fact sheets, helpful hints, etc.