Shell Programming and Scripting

Hello,
I have a question regarding file naming under a loop in tcsh. I have the following code:

Code:

#!/bin/tcsh
foreach file (test/ProteinDirectory/*)   # The * is a bunch of ProteinFile1, ProteinFile2, ProteinFile3, etc.
sh /bioinfo/home/dgendoo/THREADER/pGenThreader.sh $file $file 
         #the first $file is really supposed to represent the filename, the second $file is the actual path!
echo DONE! $file#protein name is what I'm aiming for
end

The problem:
If I echo $file in the loop, it will print the entire path: test/ProteinDirectory/ProteinFile1
I want a way to only extract the actual file name (ex: ProteinFile1) to use in the loop to rename my files, and still retain the $file because I need that path as input.
So in that case the code would be something like:

Code:

#!/bin/tcsh
foreach file (test/ProteinDirectory/*)
set ProteinName = ?? 
           # Where ProteinName = ProteinFile1, ProteinFile2, etc. Probably some string manipulation on $file
sh /bioinfo/home/dgendoo/THREADER/pGenThreader.sh ProteinName $file
echo DONE! ProteinName
end

1. Could you suggest a way to do this? I think it could be done in Sed with a / delimiter, but I am not very familiar with that language.

2. I also wanted to try and modify this loop so that I only work on 200 ProteinFiles at one time, so I wanted some sort of condition to say "execute from ProteinFile5 to ProteinFile205". I would really appreciate some input on how to incorporate this condition into the loop also.

Thank you very much for your help!