Yes.
for that you probably will have to buy?/rent a server. you can get one at the related links below.
What you are looking for are plug-ins. Unlike mods, these do not add in extra mobs, items or blocks. They simply use commands to do interesting things, or add new functionality with existing things. For example, on the Lord of the Craft server they have many plug-ins, such as magic. To use magic you hold a golden hoe and shift+right click, and it shoots a thunderbolt. There are many plug-ins for multiplayer servers but I recommend Bukkit, as it is constantly updated and is very widely supported. You simply download Bukkit and install it on your server, then start puttin' those add-ons in yo' server!
Mods, or add-ons, are modifications to the game.
Advertising is one. Minecraft forums are great to get new players if you have some interesting features and mods to offer on your server. Perhaps create a clan and add some lore about it. The more immersive tour serevr is the better
download it then chuck its contents in a mods folder in minecraft .jar
look what ever game you want and add the word mods to the end on google. e.g oblivion mods, GTA mods
Suggest you have a look at these sites to see if they can help you:gtaivmods.com/www.moddb.com/mods/gta.../how-to-install-mods-in-gtasa
Yes. Optifine can count as a mod. Just place your optifine.jar in the mods folder, and add other mods with it.
you have to get somebody to install a mod chip then you can add mods and put games on the ps2 although, if you bought your ps2 and it was already chipped, then it'll be easier for you to add mods. But downloading them and installing them requires the right programs and requirements...
There are mods that add lego.
You need to go into your computer and find your IP then tell your friends to type it in to the direct connect or add server
i think you talk to them and and select add