Yes you do. Counterstrike: Condition Zero, however, is not a mod of Half Life, and therefore, does not need Half Life to acquire.
In order to download zombie panic from steam you must have Half life 2. So yes, you do need half life 2
No, only when you download them the first time.
Since Half-Life: Opposing Force is an expansion pack, you first need Half-Life and a Steam account. Pay the $4.99 required to own the game, then download it through your Steam client.
Mods (modifications) are free. You do not need to pay, however, you do need to be able to download them. Use Magic Launcher or Forge to do this.
of course if u need from that website
you need to download a mod in order to do that. you can only download mods for Oblivion if it is on your PC
No go to thesims3.com for mods and register yourself and game to get $10 for the Sims 3 points to use but you don't need them. I hope this will help.
to download the mods, no, but to actually install them you need some form of an archiving program that can convert files into .zip or .rar format
You can download mods for Halo:Reach from se7ensins.com so long as you have a way of transferring them on to your Xbox, such as a data transfer cable or a USB memory stick, this may get you banned if you use mods online. If you need any more help there are many tutorials on how to mod it on se7ensins.com
You would require an internet connection and access to the websites that provide the Mods, If you would like to install the Mods, a copy of DoW installed on your own hard drive is required.
You NEED to have downloaded minecraft to use mods. There are hundreds of mod installation tutorials for all of the most popular mods on YouTube!
Mods can usually be downloaded from where they are publishedSome mods come with an installer to install the modFor other mods, you need to install them manually by opening the zip file they are in and copying the contents to the minecraft.jar file found in the bin folder of the .minecraft directory