First of all you have to set up Metamod.
What is Metamod?
Metamod is the base of all Counter-Strike 1.6 server addons.

1st Download the binaries from Metamod.org and extract them to a folder, you want.

2nd Upload metamod.dll to cstrike/addons/metamod/dlls. If the folders don't exist, create them!

3rd Now open cstrike/liblist.gam.
The content should look like this:
game "Counter-Strike"
url_info "www.counter-strike.net"
url_dl ""
version "1.6"
size "184000000"
svonly "0"
secure "1"
type "multiplayer_only"
cldll "1" 
hlversion "1111"
nomodels "1"
nohimodel "1"
mpentity "info_player_start"
gamedll "dlls\mp.dll"
gamedll_linux "dlls/cs_i386.so"
trainmap "tr_1"


4th If you use a linux server replace gamedll_linux to:
gamedll_linux "addons/metamod/dlls/metamod_i386.so"
else replace gamedll to:
gamedll "addons\metamod\dlls\metamod.dll"

5th Now restart your server or change the map and type meta version into your console.
If you did everything right, a message like this appears:
Metamod v1.19p28  2006/03/04 (5:13)
by Will Day
http://www.metamod.org/
Patch: Metamod-P (mm-p) v28
by Jussi Kivilinna
http://metamod-p.sourceforge.net/
compiled: Mar  1 2006, 16:50:37 EET (optimized)

Now you have to set up AmxmodX. (short: amxx)
AmxmodX is more powerful than Amxmod for years.
So don't think about Amxmod: AmxmodX is much better!

1st Download Amx mod X Base from this page and extract it to a folder, you want.
Then download Counter-Strike Addon from the same page and overwrite the files of base with this files! (It's very important that you do this step right)
Now upload the whole folder amxmodx to your server. After this, the path to the configs directory should be this: addons/amxmodx/configs.

2nd open addons/metamod/plugins.ini. (If the file doesn't exists, create a empty text file and rename it)
If you use a linux server, add this:
linux addons/amxmodx/dlls/amxmodx_mm_i386.so
else:
win32 addons/amxmodx/dlls/amxmodx_mm.dll

3rd Restart the server and type meta list into your console.
If a line like this appears, you did everything right:
[ 2] AMX Mod X        RUN   -    amxmodx_mm...  v1.70     ini   ANY   ANY

4th AmxmodX is running now :)
But we have to add some new modules.
open addons/amxmodx/configs/modules.ini and remove the ; from the plugins, you like to use.
ProKreedz needs Cstrike, Engine, Fun and NVault.

Restart your server and type amxx modules into your console.
If all modules are running, you can go to the next step.

Note For more informations or a lot of other plugins visit www.amxmodx.org.

After you successfully installed AmxmodX, it's time to set up ProKreedz.

1st Upload prokreedz.amxx, prokreedz_hook.amxx and prokreedz_grab.amxx to addons/amxmodx/plugins.

2nd Open addons/amxmodx/configs/plugins.ini and add at the bottom:
prokreedz.amxx
prokreedz_hook.amxx
prokreedz_grab.amxx


3rd Restart the server and type amxx plugins in your console.
Make sure, that this 3 plugins are running.

4th Create an empty text file, rename it to kreedz.cfg and upload it to addons/amxmodx/configs
In this file you can add all your kreedz settings.

Now you're done. :)
I hope this little tutorial could help you.

greets p4ddY