I have taken a few nice screenshots ,read articles in here about it,but cant find them:>(I left dials etc on screen to check if writing confirmed photo...it did),inserted disc and start-up box shows to run or go to files,went to files and cant see anyhting there.I am pressing ctrl F11 getting confirmation shot has been taken and am using VISTA.

I go to My computer/Program files/Ubisoft/Silent hunter wolves of Pac. and look for a file that says something like SHImg@20... Then double left click and that should be your scrn/shot. If you have SH4 1.5 (U-boats) on disc you don't need disc for this or to even play the game, after it's been installed.

Vista can be a funny beast when it comes to screenshots.
Try an advanced search using the global parameter... *.bmp