hi, i have a small video/game cafe in the province with ten PCs.Since the start of school opening, business is not doing well. A neighbor told me just further expand my business to offer long distance services via this new technology called VoIP. Im not a techni guy. He told me a DSL line is all i need. How about the software requirement for this. Is there available diagrams with corresponding equipment which i can buy in order to complete my network? thanks for any help.