0000927016-99-000655 SC 13G/A 1 19990216 ADVANCED TECHNOLOGY VENTURES IV L P ALBERT E. PALADINO ATV ASSOCIATES IV, L.P. JOS C. HENKENS MICHAEL E. FRANK PIETER J. SCHILLER STEVEN N. BALOFF ACCELGRAPHICS INC 0000947798 3670 770388689 DE 1231 SC 13G/A 34 005-51483 99539641 1942 ZANKER ROAD 408-441-1556 SAN JOSE CA 95112 4084411556 1942 ZANKER RD SAN JOSE CA 95112 ADVANCED TECHNOLOGY VENTURES IV L P 0001032283 SC 13G/A 281 WINTER STREET SUITE 350 WALTHAM MA 02154 6172900707 SC 13G/A 1 000092701699000655-001-seq1-sc-13g-a.txt SCHEDULE 13G/A