Digital Generation Systems Inc, San Francisco operator of a US-wide multimedia network designed to provide to provide electronic delivery and related services to the broadcast industry by linking content providers to broadcast stations, has filed to go public with an offer of 3m shares, all new, at a target price of between $9 and $11. Net proceeds will be used for capital expenditures including network expansion, working capital and repayment of debt, Hambrecht & Quist LLC will be lead manager of the underwriting group, alongside Merrill Lynch & Co and Cowen & Co, who will serve as co-managers.

Red Brick Systems Inc, Los Gatos data warehousing software specialist has filed to go public with an initial offer of 1.8m shares at a target price of $8 to $10 per share. Morgan Stanley & Co Inc and Hambrecht & Quist will underwrite the offering.

VitalCom Inc, Tustin, California communication networks operator formerly known as Accucore Inc, has filed with the US Securities & Exchange Commission to go public with an initial offer of 1.75m at a target price of between $9.50 and $11.50 a share.Wessels Arnold & Henderson and Volpe, Welty & Co are the managing underwriters for the offering.