Hi. I would like to know if it is possible to convert the rear drum brakes to disc brakes. If so, what is needed,(i would be putting aftermakert parts), what kind of work is involved ect. Would the handbrake still work? Is there anything important I should know about this?

I think there's a write up on here somewhere, do a search.

Yes the Avenger rear discs will work.  Not to hard of a swap to do.

is it that much to ask of people to do a simple search before asking questions that have been answered 10934750293475 times in the past.

Yes
You need: e-brake assemblies, rotors, calipers, brake lines. The only thing available aftermarket are rotors and stainless steel brake lines.
The most difficult part of the swap is removing/installing the hub bearing assemblies, converting the e-brake cable to fit, and bleeding the air out of the brake lines after the calipers are installed.

Yes
Set a whole day aside to do this.

Here are some pics to assist you with the install:
http://www.rcaz.com/rcaz/sub%20indexes/drum_to_disc/index.htm

All four of these cars use the exact same rear disc setup.

95-00 Dodge Avenger
95-00 Chrysler Sebring
95-99 Mitsubishi Eclipse
95-98 Eagle Talon

could do front 3kgt dual piston calipers