need urgent help! apache down and cann't change anything!

i have apache down (du a problem in the apache httpd.conf file)
When i try to restar i recive:
[Mon Aug 1 11:21:08 2005] [notice] SIGUSR1 received. Doing graceful restart
httpd: bad user name guarda
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so i try to delete the bad entry bu this is not possible as i cannot do any changes to the httpd file. I recive permission denied
so i cannot
- change the file
- move the fine
- edit the file
- backup the file
i cannot do anything.

so how can i delete the bad enrty?

thanks a lot

 

 

 

 

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