To be rather frank about it, the only occasions in which I 
find that WinHTTrack has any difficulties in dealing with
parsing is within WWWsites that use programming languages 
like php, and I figure from what I know and read that this 
is just because of the way the pages are generated. It 
seems to me that the option within HTTrack for dealing 
with files that simply change a time stamp is a rather 
important one for this kind of problem. I usually have to
input a few different sets of settings before successfully 
mirroring WWWsites involving php, dynamically-generated 
databases, user forums, et cetera.