I have been trying to find a tutorial or some kind of explination on how to redirct tags in maps, but i could not find any, could some plese tell me how its done and futher more what program i would use ie: would i use gurilla?

Guerilla. Open the scenario, and find the tag that you wish to redirect to another. Either manually type in the directory if you're a ninja, and memorized it, or click the three buttons to browse to it.

thx but a one more question when redirecting a tag like a weapon, will just have to redirct just the .weapon tag or will i have to chage everything like bitmaps, shaders, weapon_hud_interface ....etc,etc,etc?

also is it possible through this method to change the weapons in the map like in the campagin, replace all the ar with silenced smgs?

In theory, yes. But if you DO do this remember that there are weapons AND the weapons palette. Be careful when redirecting, replacing, or deleting things in tags like the scenario file. If you were to delete the ghost from your vehicle palette with vehicles still placed in the scenario, you'll crash. That's my word of caution about palettes (for a scenario, like a campaign map, they are scenery, weapon, biped, vehicle, all the devices like doors and lights, and equipment.)

I have a universal tagset in the sense that all my weapon and vehicle tags are always in the exact same place. Whenever I need to change something, I mod the weapon tag itself. That way, no redirecting for anything is necessary.