Large file tranfer settings
 

Win XP SP3
When transferring a number of large files,
sometimes file manager in the middle of the
transfer announces that the destination no
longer (does not) exist, and the transfer stops.
Essentially this means for one reason or
another, connection with the receiving computer
is lost. This is a WiFi LAN. Are there settings
that can be made to (the registry or elsewhere)
that allow maintenance of connection? Even for
the WiFi router, are there
threshold/fragmentation/bandwidth, etc. settings
to the router that make transfers more stable.
In my situation, the WiFi signal to both
computers in question is five bars/excellent.
Thanks.