How to deploy deb files.

[John Culleton <john@wexfordpress.com>]

I just installed Debian specifically for the purpose of accessing the 
latest Gimp 2.6.1 version. I changed the references in sources.list 
from etch to lenny. I went through all the apt-get update etc. 
exercises. But I still get Gimp 2.4.7.

I found a site called getdeb.net from which I can download a .deb file 
containing the latest Gimp. But now what do I do? I don´t find a 
command like e.g., rpm for decomposing and installing rpm files or 
gunzip etc. for gzipped files. 

Alternatively, is there another entry in sources.list that gets me to 
the version I need? Currently the file looks like this:
-----------------------------------------------------------------
deb http://ftp.us.debian.org/debian/ lenny main
deb-src http://ftp.us.debian.org/debian/ lenny main

deb http://security.debian.org/ lenny/updates  contrib
deb-src http://security.debian.org/ lenny/updates  contrib
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-- 
John Culleton
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