If you have an IMAP account with Gmail, that's how it works
(its called synchronization). If that's not what you want, install a
POP version of that Gmail account:
http://mail.google.com/support/bin/answer.py?hl=en&answer=86382

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Gary VanderMolen, MS-MVP (Mail)
> How do i change the settings so that when i delete in windows mail the
> messages in my gmail inbox online are not automatically deleted too?
stlarch21 - 31 Jul 2008 19:33 GMT
perfect, thanks much for the help.
> If you have an IMAP account with Gmail, that's how it works
> (its called synchronization). If that's not what you want, install a
[quoted text clipped - 3 lines]
> > How do i change the settings so that when i delete in windows mail the
> > messages in my gmail inbox online are not automatically deleted too?
Gary VanderMolen - 31 Jul 2008 21:08 GMT
You're very welcome.

Signature
Gary VanderMolen, MS-MVP (Mail)
> perfect, thanks much for the help.
>
[quoted text clipped - 5 lines]
>> > How do i change the settings so that when i delete in windows mail the
>> > messages in my gmail inbox online are not automatically deleted too?