Hi justinpine and welcome,
I had the same problem and made this filter:
------------ MergeMe.cfg ---------------
[Blocklists]
List.Redirect = "..ListsRedirectMe.txt"
[HTTP headers]
In = FALSE
Out = TRUE
Key = "URL: Redirect selected (Out)"
Match = "*$LST(Redirect)"
----------------------------------------
----------- RedirectMe.txt -------------
# Redirect to local Page or whatever
www.somesite.com/cell3.gif $RDIR(
http://Local.ptron/cell3.jpg)
some.other.remote.site $RDIR(some.local.or.remote.file)
----------------------------------------
Copy MergeMe.cfg to the directory where Proxomitron.exe resides.
Then use Proxo's Merge command (explained in the help file),
you can delete MergeMe.cfg afterwards.
cell3.jpg goes to Proxo's html dir, RedirectMe.txt to the lists dir.
Have fun
sidki