Does anyone know how to do this with script?

Hi there,

Here is my problem.I've like 3000 files which are between 2-5 min long. What i have to do is:

Get the first 30 sec of all these 3000 files and add 5 sec cover animation to beginning and end with fade to all these files. Hope i can describe this with my bad english

I can figure out that...I've to have a one precomp file which has the cover animation...5 second animation..then fade out...30 sec clip..then another 5 second animation fade in...by the way, 30 sec clip should me in the middle of 40 sec comp...

Is there anyway to do this with an easy script? Or can you show me another way if you know if its possible

Thankx a million