0000905155-97-000017 SC 13G/A 1 19970220 NASD ACE COMM CORP 0001017526 3669 521283030 MD 0630 SC 13G/A 34 005-46737 97540036 209 PERRY PARKWAY GAITHERBURG MD 20877 3012589850 209 PERRY PARKWAY GAITHERSBERG MD 20877 DORR S JOSEPH 0001034147 SC 13G/A 704 QUINCE ORCHARD RD C/O ACE COMM CORP GAITHERSBURG MD 20878 704 QUINCE ORCHARD RD C/O ACE COMM CORP GAITHERSBURG MD 20878 SC 13G/A 1 000090515597000017-001-seq1-sc-13g-a.txt