vim remove line breaks
 

I've copied a bunch of text into vim and I need to get rid of the line breaks. I've tried
:%s/^M// (where ^M is C-v C-m)
and
:%s/.$//
and
:%s/\x0D$//
and
:%s/\$//

none of which work. If I issue
:set invlist

all lines are terminated with a '$'. How can I get rid of them?

Ta
Col

s/\n//

or the 'j' command on particular lines

's/\n//'! I always miss the obvious ones... Thanks slakmagik

Or run dos2unix <file> at the cmd line.