Apt repositories for unstable packages

[Trey Sizemore <trey fastmail fm>]

The following is my sources list for apt and I'm currently using FC2T3
(as generated by 'apt-get mirror-select'):

# DO NOT EDIT ME!  Use "apt-get mirror-select" instead.
# Fedora Core (Indiana University, Bloomington Indiana, USA)
rpm http://ftp.ussg.iu.edu/linux/fedora.us/fedora/ fedora/1.92/i386 os
updates   
rpm-src http://ftp.ussg.iu.edu/linux/fedora.us/fedora/ fedora/1.92/i386
os updates    

# Fedora Core (University of Southern California, USA)
rpm http://mirrors.usc.edu/pub/linux/fedora/fedora/ fedora/1.92/i386 os
updates   
rpm-src http://mirrors.usc.edu/pub/linux/fedora/fedora/ fedora/1.92/i386
os updates  

# Fedora Core (Kernel.org, San Francisco California, USA)
rpm http://mirrors.kernel.org/fedora.us/fedora/ fedora/1.92/i386 os
updates  
rpm-src http://mirrors.kernel.org/fedora.us/fedora/ fedora/1.92/i386 os
updates  

# Fedora Extras (Indiana University, Bloomington Indiana, USA)
rpm http://ftp.ussg.iu.edu/linux/fedora.us/fedora/ fedora/1.92/i386
stable  
rpm-src http://ftp.ussg.iu.edu/linux/fedora.us/fedora/ fedora/1.92/i386
stable  

# Fedora Extras (University of Southern California, USA)
rpm http://mirrors.usc.edu/pub/linux/fedora/fedora/ fedora/1.92/i386
stable  
rpm-src http://mirrors.usc.edu/pub/linux/fedora/fedora/ fedora/1.92/i386
stable  

# Fedora Extras (Kernel.org, San Francisco California, USA)
rpm http://mirrors.kernel.org/fedora.us/fedora/ fedora/1.92/i386 stable 
rpm-src http://mirrors.kernel.org/fedora.us/fedora/ fedora/1.92/i386
stable  

# Macromedia (USA West, University of California at Santa Cruz)
rpm http://sluglug.ucsc.edu/macromedia/apt/ fedora/2 macromedia  
rpm-src http://sluglug.ucsc.edu/macromedia/apt/ fedora/2 macromedia  

# Macromedia (USA East, Rutgers University, New Jersey)
rpm http://ruslug.rutgers.edu/macromedia/apt/ fedora/2 macromedia  
rpm-src http://ruslug.rutgers.edu/macromedia/apt/ fedora/2 macromedia

How would I go about changing this (and I guess I can only do this by
generating an /etc/apt.conf file with the relative info) so that I can
have the latest, cutting edge packages (mozilla 1.7, evolution 1.5.x,
etc.)?  Are there mirror lists for such?

Thanks.