Car Alarms: How to add remote start to 2000 4Runner w/alarm, key fobs, remote start

Question
I have the factory alarm installed in my 2000 4Runner and I would like to add remote start capability.  I know that this in itself is not difficult, but I do not want to have to carry 2 key fobs on my key chain and I still want to be able to have a button on the key fob that will roll down the rear window.  Can this be done, and if so, is it expensive?  I'd rather not replace the entire alarm system.

Thanks,
Tom

Answer
Ok, the one for this project
is the Command Start 2000 with the
ability to use the OEM remotes (yours),
set up to engage when the lock button is
pressed 3 times in a row. This way you
have the original remote, with added
remote start. This item is 99.95.
You also have Toyota's transponder fuel
injection immobilizer that will need to
be bypassed. The CSU Crime Stopper Bypass
module is 34.00.

Let me know if you'd like to go for it,
and I will send you a payment link.
The wiring chart and my installation support
are free upon equipment purchase.

Have a nice day..
ALARMTEK/STARTBYREMOTE.COM