0000950129-04-008638 424B3 1 20041108 20041108 QUANTA SERVICES INC 0001050915 1731 742851603 DE 1231 424B3 33 333-111738 041124703 1360 POST OAK BLVD SUITE 2100 HOUSTON TX 77056 7133506000 1360 POST OAK BLVD SUITE 2100 HOUSTON TX 77056 424B3 1 h19955e424b3.txt QUANTA SERVICES, INC.- REGISTRATION NO.333-111738