Help With Loading .wads

Every time i try it says it cannot load the file, could sombody help me?

Either the WAD is corrupt, doesn't exist or you haven't given it a directory to search for the wad.

Examples
1) addfile wadname.wad
2) addfile directory/wadname.wad

If it has a space in the name
1) addfile "wad name.wad"
2) addfile "directory name/wad name.wad"

Or, use the SRB2Net launcher.

It means the file has a problem on it also look at my video, http://www.youtube.com/watch?v=x6WxD5ByWkY it might be helpful

Oh, somwhere I read that I typed ADDFILE (....)_wad, instead of .wad.Thank you.

---------- Post added at 11:09 AM ---------- Previous post was at 10:58 AM ----------

Once you load a level.wad how can you play it?

---------- Post added at 11:13 AM ---------- Previous post was at 11:09 AM ----------

oops,nevermind it was just 1 level that wouldnt work,all my others worked automaticly