Thanks everyone for your replies and help very much appreciated

. I am a little tired now so will look into this program tomorrow.
Just out of curiosity what does the .val files do?
As I currently have the following mods enabled in my game.
Hospital Ship Lights v1.2
NF Boat L Lights
Harbour Traffic 1.47
The mod I am trying to enable is called LifeBoats&Debris_v4 and everytime I try to enable this mod using JSGME I get the following error message.
"NDD_Soldati.val" has already been altered by the "Harbour Traffic 1.47" mod.
Folder "Data\Sea\NDE_FTboot" has already been added by the "Harbour Traffic 1.47" mod.
"NDE_FTboot.val" has already been altered by the "Harbour Traffic 1.47" mod.
Folder "Data\Sea\NF_boat_L" has already been added by the "NF Boat L Lights" mod.
"NF_boat_L.val" has already been altered by the "NF Boat L Lights" mod.
Folder "Data\Sea\NHPB" has already been added by the "Harbour Traffic 1.47" mod.
"NHPB.val" has already been altered by the "Harbour Traffic 1.47" mod.
Folder "Data\Sea\NHSL" has already been added by the "Hospital Ship Lights v1.2" mod.
"NHSL.val" has already been altered by the "Hospital Ship Lights v1.2" mod.
"NPT_Br.val" has already been altered by the "Harbour Traffic 1.47" mod.
"NPT_Ge.val" has already been altered by the "Harbour Traffic 1.47" mod.
And as you can see all these files are .val files. So I am not to sure what I should do here. As I want to use the LifeBoats&Debris_v4 mod. But I would like to know what effect it will have on the other mods if I do.
Thanks again for your help!