> Generally netwok conditions change over time. Also as 
> humans it is dificult to decide on the number of 
> connections etc.
> Therefore if there is a mechanism for HTTrack to 
> dynamicatty decide best ontions it would be great.

Well, you can change manually the settings "in live" ; but 
generally the default 4 connexion is good - whatever the 
network condition are (slow mode, dsl, T3..): TCP is 
supposed to handle the "dirty part" (congesition, traffic 
regulation..)