I am new to this list and to Thunderbird.

I am running Windows XP, SP2 on a HP Pavilion dv6000.

I reply frequently to e-mail messages that are long and it would be
desirable to be able to intersperse my comments withing the message.

I know that I have that capability in MS products, but I have not been
able to figure out how to do that in Thunderbird.

Any help will be appreciated.