0001193125-04-083163 10-Q 4 20040331 20040510 SEI CORP 0000350894 6211 231707341 PA 1231 10-Q 34 000-10200 04791344 1 FREEDOM VALLEY DRIVE OAKS PA 19456-1100 6106761000 1 FREEDOM VALLEY DRIVE OAKS PA 19456-1100 10-Q 1 d10q.htm FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2004 EX-31.1 2 dex311.htm SECTION 302 CEO CERTIFICATION EX-31.2 3 dex312.htm SECTION 302 CFO CERTIFICATION EX-32 4 dex32.htm SECTION 906 CEO AND CFO CERTIFICATION