Very first thing:

Get fresh drivers for your PC! (newest GFX drivers undoubtedly are a huge MUST) as well as copy all of them on a CD/DVD/Flash drive, disconnect the internet cable from the pc and FORMAT (FULL possibly, not fast format) after that install fresh windows (windows xp is best in my opinion) Ensure that you keep a minimum of 20 Gb for the windows partition (Vegas and AE will certainly start up quicker, all round pc is going to be more quickly).

After that install the drivers, reboot your computer, connect the internet cable

Codecs:

Setup Only ffdshow, Matroska Splitter and Media Player Classic and absolutely nothing more !

Download cLutch5's codec pack with everything you need HERE

In case you do not own a ATI HD or nVidia 8/9xxx GFX card LEAVE EVERYTHING DEFAULT

If perhaps you own a ATI HD or nVidia 8/9xxx GFX card click START - PROGRAMS - FFDSHOW and click on "Video Decoder Configuration" after that on "VFW Configuration" at this point you have got two setup windows, proceed to H.264/AVC, set the decoder to "Disabled", exact same regarding the 2nd window, keep the rest default.

Quality and setting :

Many of us set the GFX card for moviemaking, ATI Guide , nVidia Guide.

The major difference between AF OFF/FULL and Aa OFF/ FULL

Also you can download NVIDIA and ATI video tutorials

At this point we have to take proper care of counter-strike , you need a moviemaking pack and a cfg, you may obtain one HERE

The MM Pack contains :

CFG with quality/demo/HLAE settings.
HLAE sky ready to be used.
Say Team, Scoreboard, Radar etc removal
Pain removal (when a player is hit red arrows appear on the screen)
Sounds removal (only weapon sounds work)
Text removal (bomb plant, T/CT win etc)
Green sky (mirv_fx_skyhd 0 to use it) for the "mirror" effect.
High quality guns and models.
Custom background, colours etc

CFG usage :

Very first thing exec userconfig.cfg BEFORE viewdemo as well as AFTER viewdemo!

W - Forward.
A - Left.
S - Back.
D - Right.

E - Up.
Q - Down.

Right arrow - The demo plays Really slow.
Left arrow - The demo plays slow.
Up-arrow - The demo plays quickly.
Back arrow - The demo moves five seconds back.

Space - Demo pause.

F1 - First person mode.
F2 - Map view.
F3 - Model view.
F4 - Free view.

In the cfg we don't include camera binds due to the fact we use CAMPATH - Complex English campath guide By ripieces

Campath Suggestions :

- "View Angle" can easily be changed in order to get a "rolling" effect, Example of this HERE
- "Field Of View" can easily be changed to help you get a unique look, Example of this HERE

You may as well use STUFFTEXT to get timing effect (such as zoom, record start/stop etc)