having graphic glitches when starting the game with the sh3.exe? --> open the game CD and make a shortcut for sh3autorun.exe for your desktop.
think you spend too much time in port between patrols? --> go here:
C:\Program Files\Ubisoft\SilentHunterIII\data\Cfg
and open the "basic.cfg" file. Find this section:
[TIME]
TransferFlotilla=1
NbDaysInBase=28
NbPatrolsInFlotilla=3
NbMonthsInFlotilla=6
change "NbDaysInBase=28" to your desired number of days. Note that upgrades and such will add days to this base value.