Hi and welcome back
1, Read this thread
http://www.subsim.com/radioroom/showthread.php?t=102096
You can read the GWX manual online here
http://mysite.orange.co.uk/manual/GW...NUAL_EN_PF.pdf
2, Depends on what mods you use
Sometimes they work sometimes they dont
3,Yes there is but not allowed to be discussed on here
If you do decide to get GWX then also get SH3commander and GWX specific cfg files
All available here
http://www.users.on.net/~jscones/GWX/download.html