X0201 4 2004-02-23 0 0001069778 NETWORK INSTALLATION CORP NWIS 0001232584 LEIGHTON DOUGLAS 312 STUART ST BOSTON MA 02116 1 1 1 0 Corporate Secretary common 2004-02-23 4 S 0 3500 3.9 D 3072533 I see footnote Mr. Leighton directly owns 23,200 shares. Mr. Leighton is a managing member of Dutchess Capital Management, LLC which acts as general partner to Dutchess Private Equities Fund, LP which owns 2,349,333 shares. Mr. Leighton is a managing partner of Dutchess Advisors, LLC which owns 700,000 shares. /s/ Douglas Leighton 2004-02-24