Here are the steps in less words.

STEP 1: Backup data directory
STEP 2: download
this build of FSO. I am pretty sure that with this build, you can use the cutscenes that came on the CD (they were in MVE format, FSO
used to only like AVIs.)
STEP 3: take the fs2_open_3.6.9.exe from the RAR in the previous post and the Launcher.exe from the build that you downloaded. Place them both in the main FS2 directory.
STEP 4: If you have a high end computer: get all (download) media VPs (located
here If you have a moderate level computer get all except Adv effects
If you have a low end computer, get all except Adv effects
STEP 5: Create a folder in your FS2 directory called "Media VPs"
STEP 6: Place all VP files downloaded in step 4 into the folder you just created.
STEP 7: Run the Launcher.exe that you placed in the main FS2 folder. (not the RETAIL launcher)
STEP 8: At the top of the Launcher, you will see an empty text box with a 'browse' button on it's right. Click the 'browse' button.
STEP 9: Select the 3.6.9 build of the SCP that you placed in the FS2 directory earlier.
STEP 10: go to the 'Mods' tab and hit 'select mod'
STEP 11: Select the "Media VPs" folder
STEP 12: Go to the Features tab and select the features (graphical enhancements

) you wish to use.
STEP 13: hit 'apply' then run!!
The reason I had you put the media VPs in a separate folder is because if your version of SCP breaks, then you can still run RETAIL FS2. When you finish the SP campaign refer back the the faq (the very first link I gave you). It tells you how to use mods and MVs at the same time

. I suggest you also bookmark the faq along with
this page. They are VERY VERY VERY useful.
Hope I helped!

EDIT: Curse these cold hands! I can't type!!.

!!