From To vs Reply To

[Paulo Brandao <pbrandao @ ispgaya . pt>]

Hello,

    I have a question, how do i replace the field From To with Reply To,
example:
	From : "pbrandao@ispgaya.pt"
	Reply To: "list name"
and i wan't this
	From : "list name"
	Reply To : "pbrandao@ispgaya.pt"


Thank's in Advance

Paulo BRandao