everytime i download a mod and put the data in my oblivion data folder and i play the mod its ends up an exclamtion (!) mark wat did i do wrong??

you need to put the files in their proper places, meshes go in meshes, textures in textures, according to what they are, armor,clothing or weapons
etc1

thanks

its not working maybe i did something rong could u any1 plz provide a detailed description?

http://thenexusforums.com/index.php?showtopic=21998
read this

That description you ask was already given. ESPs and ESMs goes in the /data, textures goes in the /data/textures and so on...

Normally installing mods is just unpacking it in the correct "root" directory ... I explain:

Some mods have one /data folder and some files inside the compressed file ... they are to be unpacked into the Oblivion folder, NOT into the .../Oblivion/data (you can say the mistake if you have another /data inside the /data folder)

Some mods have several files and folders. normally named xyz.ESP and folders like Textures, Meshes, and so on (these are to be unpacked into the .../Oblivion/Data folder)

Some mods have a folder with the mod name inside the compressed file... these are a bit more complicated since you need to unpack it in a temporary folder and select one of several alternatives the USER must choose one and copy to the correct places "by hand"

Anyway, is your responsibility you make sure the unpacker you use (Winzip, WinRar, etc) is configured to honor the subdirectory structure, since there are configurations to allow the files being placed at one only level, disregarding that directory parentage.

Edit: Make sure you are unpacking Everything too, not just selecting only one file inside the package.

This is probably the most common problem in mods. It is caused when the game cannot find the mesh called for by a mod. It uses the yellow block as a placeholder to keep from crashing.

All except the simplest mods have new textures and usually Meshes. If you look at the zipped files (expand them to see what is there before installing) you will usually see several types of files. The filename.esp is the actual mod, it goes into the Oblivion\Data folder.

A filname.txt or Readme.txt file - this is the read me file that you should read to see if there are any special instructions for this file, such as it may need another mod to work or need OBSE, or need the Shivering Isles expansion, or Need the latest patch.

Textures folder. this contains the texture files (.dds) for the mod. this should be copied to the Oblivion\data\textures folder
Meshes folder. This contains the meshes for the mod, it should be copied to the Oblivion\data\meshes folder
Sounds folder. This contains any new sounds needed by the mod. it should be copied into the Oblivion\data\sounds folder

.bsa files these are compressed files that may contain all of the different files. Any .bsa file should be copied without change into the Oblivion\data folder

There may be other files or folders included, but those are the most common.

If you look in the Oblivion/data folder and see a bunch of .dds files, .nif files, .mp3 files they are in the wrong place. You need to MOVE them to the proper folders.
.dds to the textures folder
.nif to the meshes folder
.mp3 to the sounds folder
.wav to the sounds folder

In a mod with meshes and textures, they are usually in their own folder - look in the zipped file, extract the meshes folder to the Oblivion\data\meshes folder and the textures folder to the Oblivion\data\textures folder. Do the same with any other folder in the zipped file. Usually only the esp file goes into the \Data folder