initdb problems

good day!

i'm having problems with running initdb. my platform is windows 2000
professional. just installed cygwin 1.5.11-1. i was able to compile
and install postgresql 7.4.5 from source with simply doing
./configure, make, and make install. then i ran "/usr/sbin/cygserver
&." finally, i ran "initdb -D /usr/local/pgsql/data." but it ends with
this:

FATAL: lock file "/usr/local/pgsql/data/postmaster.pid" already exists
HINT: Is another postgres (PID 1884) running in data directory
"/usr/local/pgsql/data"?


thanx in advance! :)