Marketing Service Agreement

                                                                     EXHIBIT 4.1

                                JUAN C. FERREIRA

                             Advertising Consultant

                           Marketing Service Agreement

This  agreement is made and entered into this 17th day February,  2004,  between

Juan C. Ferreira located at 468 Wild Oak Circle Longwood, Fl.32779,  hereinafter

referred to as JCF and NanoSignal Corp. located at 345 Southpointe Blvd. Ste 110

Cannonsburg, PA. 15317 hereinafter referred to as the Company.

WHEREAS JCF is a public relations / advertising  consultant  specializing in the

dissemination of information about companies, their products and services and

WHEREAS  the Company is publicly  held with its common  stock  trading on one or

more stock exchanges and or over the counter and

WHEREAS the Company desires to publicize itself with the intention of making its

name and business better known to its market sector and potential customers and

WHEREAS JCF is willing to accept the company as a client

Now, therefore, in consideration of