How to make a file "hidden"

This question might sound stupid but here it goes. How do you hide a file?, i know how to view hidden files (onyx) but i dont know how to make a normal file as hidden

On a related note, I am looking for a way to hide only those files that I want hidden. Some hidden files I need to access on an almost-daily basis, but others, like .DS_Store and such, I'll never need direct access to.
So, is there an official way to set up a custom list of file names and/or file regex patterns so only certain files are hidden from the Finder?
Thanks!
MacBook Pro 17 2.33GHz/2GB/100GB Mac OS X (10.4.8) Development Machine

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"Claudia" <[email protected]> wrote in message
news:3d537db5$[email protected]..
>
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