[Android Stick & Console RockChip based Computers] EQUANCY:
Hi,

I didn't understand exactly what you've ment but, I'll try to explain as much as I understand.

First story - Manual installation after boot:

You want to add custom modules to a rooted rom which hasn't these modules already.

You need to repeat this steps on each boot, your new settings will be gone after reboot, but safe way.

Steps:

You just copy your preferred modules to ...\System\lib\modules with any file browser with root access and modify ability, you also need to mount system directory as RW (Read Write).

You need android terminal to be installed on your device, if you don't have then you go to Android market and install a basic Terminal emulator, you don't need 3rd party busy box, there is already busybox in device.

If you have done above steps then next is installing these modules from console.

Now, you open the terminal emulator and follow below commands.

ls

This command will let you see which directory at the moment, just like Dir command in windows.

if you are in main directory then type these commands in order.

cd system
cd lib
cd modules

Now check out one more time where exactly you are.

ls

If you are in correct place then, follow next command.

insmod [COLOR=Red][B]tun.ko[/B][/COLOR]

Red colored text is the name of the module which going to be installed, you may install as much as you want.

Then you have to check that if your module installed correctly.

lsmod

As result of this command, you'll see installed modules as a list.

But...

MODULES MUST BE COMPATIBLE WITH SYSTEM.

BECAUSE THESE MODULES ARE KIND OF DRIVERS AND WON'T WORK AT ALL SYSTEMS PROPERLY.

End of the First story...

Now, second one.

You have necessary modules and rooted rom already installed on device but you want to install these modules at boot time.

You don't need to repeat this steps on each boot, one time only and new settings will remain.

So,

This is more complicated and I must warn you this way is risky, most probably dangerous.

Because you will going to change one of the most important system files, called init.rc

This file similar to boot.ini file from windows xp or so, loads essential drivers, modules etc...

If you do something wrong then you may need reinstall firmware to your device.

You need RootExplorer (simplest way), you must go to main directory again, NOT to SYSTEM DIRECTORY.

Mount directory as RW. (important to do)

Find there init.rc file and if you are using RootExplorer then long press that file and select Open with Text Editor

If you opened properly then search for these lines.

on fs
insmod /rk30xxnand_ko.ko
# mount mtd partitions

then you need to add following lines after :

mount ext4 mtd@cache /cache wait noatime nodiratime nosuid nodev noauto_da_alloc discard.

but be very careful, here is safest place to add commands for our device.

chmod 0644 /system/lib/modules/tun.ko
chown root /system/lib/modules/tun.ko
insmod /system/lib/modules/tun.ko

You may install as much as modules from here, but I repeat

THIS IS VERY RISKY and DANGEROUS

After you save init.rc, RootExplorer will make a backup called init.rc.bak, copy this file to your USB memory or sdcard, just in case.

If you didn't understand anything from above informations, I SUGGEST YOU EVEN DON'T TRY IT, FOLLOW FIRST STORY, IT IS SAFEST WON'T HARM ANYTHING.