compiling postgres on windows: major headache

Hi all,

How is this path created without the (.profile)? 

$ echo $PATH
/usr/local/bin:/usr/bin:/bin:/cygdrive/c/amtagent:/cygdrive/c/informix/bin:/cygd
rive/c/winnt:/cygdrive/c/winnt/system:winnt/system32:/cygdrive/c/Windows:/cygdri
ve/c/Windows/command:C:jdk1.2.2/bin

How can I add this path (~/cygwin/usr/bin/gcc-3.2.1) to the above path?  



I downloaded the following:
postgresql-7.3.tar
cygipc-1.09-2.tar.gz 
gcc-java-3.2.1.tar.gz 


Thanks,

Al