cvs diff on revisions within a branch

[ppf2]

hi there,

i am kind of new to cvs. wondering if you guys can help me out.
i would like to do a cvs diff on files that are within a branch.
Let's say i have a branch with the revision tag version1-0.  If i 
want to do a cvs diff of the files - today vs. a week ago, what 
should i do?

When i do a cvs checkout -r version1-0 ... i assume that it pulls the 
latest versions of the files that are checked into the branch (ie. 
not the versions of the files when i first branched it). Am i right?

So i am thinking maybe i can use:  cvs diff -r version1-0 -D (the 
date i branched version1-0)?

Will this give me the difference between the current versions of the 
files within the version1-0 branch vs. the versions of the files when 
i originally created the branch?

What is the recommended approach?

thanks,
Peter