Hi Jaeger
Theres 2 setups you can use in command.cfg.
1/ Direct shortcut
In setkeys give "Conning tower periscope" a key shortcut
OR....
2/ Goback (see old thread at bottom)
In setkeys give "Go back to prev cam" a key shortcut
In this command
[Cmd16]
Name=Periscope_camera
Ctxt=1
MnID=0x3F020003
Key0=0x72,,"F3"
Page=0x26000000,3702
GoBack=Conning_tower_camera
Change to.....
[Cmd16]
Name=Periscope_camera
Ctxt=1
MnID=0x3F020003
Key0=0x72,,"F3"
Page=0x26000000,3702
GoBack=Conning_tower_periscope
The advantage with the goback is you can add more commands easily and have many new gobacks with the same mouse button. ie UZO to conning tower or Captains log to Command room.
3/ Finally download xmouse (just google xmouse)
This supports 5 buttons on your mouse. You can assign buttons to keystroke.
Change spare button to your key in xmouse.
Now when you press that mouse button, it is the same as pressing the key.
p.s.
It was some time ago that I used option 2. I remember this was the only way to make it work correctly. Other ways had problems like double jumps. There's an old thread here
http://www.subsim.com/radioroom/showthread.php?t=126046
Hope that helps