How to set envrionment variables in cygwin

I need that everytime I open cygwin the followin should be set:
set ROOT=/directory1/direcotry 2

Where can I do this? I dont want to type this each time.
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rohganAuthor Commented:
I have installed cygwin on XP
On normal UNIX that is done using .profile file in your home directory
If that does not work - System Properties/Environment ...
see in cgwin's home/user directory, there is a .profile, if not create it

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Unix OS

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