I just started a business, need some advice..?

I've created an office, I am able to accept cc,check,direct deposit and also mail at all times...I have the software needed to complete the services and also have a strong knowledge for what I'm doing... now I need to reach out to the one hundred companys that might use my service... this is were I'm stumped, I need to hit a home run with my online presentation as well as over the phone... I'll be speaking with managers from a variety of building material suppliers. Any good Ideas on how I take this final step... Its eating me up and I've been stalling for about 2 months.