If you're a flashaholic and aren't doing this, you're insane.
Err, maybe not a true flashaholic.... Just need retraining.
It's actually VERY simple to do.
Make a folder on your pc to keep everything in place. I actually have a small drive partitioned. But a usb mem stick would be perfect.
Make a folder called cabs.
put all your toys in there.
EDIT the names of your cabs so there are NO spaces in the names....
then at the root of the folder, make the SDCONFIG.TXT file.
Here's an example of my sdconfig.txt file. Lines removed of course to make it small for the forum.
LOCK:Enabled
XML: \Storage Card\cabs\Email.xml
CAB: \Storage Card\Cabs\owner.cab
LOCK: Disable
<- remove the spaces in here. The forum converts : D into 
HIDE:Enabled
CAB: \Storage Card\Cabs\DinarSoftMemMaid_en.CAB
LOCK:Enabled
LOCK: Disabled
<- remove the spaces in here. The forum converts : D into
RST: Reset
The first line is the .xml that provisions my exhange.
The first set of cabs listed (small set) are cabs that require NO user input.
The second set are ones that DO require input.
keep adding CAB lines as shown there for each of the cabs you want installed.
obviously you copy the .cab files to the cab directory.
once you have it all the way you want, copy it all to the root of your SD card before you flash.
then have fun.
The reason I suggest you have a full copy on your pc is so you can add/remove/modify it all when you upgrade your cab files, email.xml file and the sdconfig.txt file.
As I try new apps, reg changes, etc, if I like and keep, I add it to the package and recopy it to my phone.
Once you do it, you'll NEVER go back to manually installing stuff!!!!!