email signiture

[Andy]

I am using a email signiture that looks fine and when I
send a new message it is ok. However, when I reply or
post on a group ( like Yahoo) it spaces out my signiture
by placing a blank line between each line of my signiture.
Example:
(normal) Andy
Somewhere out there
Never again, USA

Reply:
Andy

Somewhere out there

Never Again, USA

Please help