compare DNA sequence on internet

[YMMCS023 at TWNMOE10.Edu.TW]

I got some sequences from human fetal brain cDNA. Where could I compare these
uences with DNA bank (requiring no specific password) on internet to see if I h
ave got something new or something old. Any information will be highly appresci
ated.
 
Sincerely
 
CHEN-JEE HORNG, M.D.
DEPARTMENT OF PSYCHIATRY
VETERANS GENERAL HOSPITAL-TAIPEI
TAIPEI, TAIWAN, R.O.C.