upgrading from hardy

[michael weaver]

i sent this email to both lists before but it may have been 
rejected because i might have sent it from the wrong email 
address when i sent it with my braillenote.
if i do a sudo do-release-upgrade, do i need to edit my 
sourcesddlist file by changing hardy to the next version in each 
line which starts deb http because at the moment i get something 
like "no upgrade found.
i think i read something once about enabling software sources but 
if you go into that menu speech stops like it either crashes or 
it is the sudo problem.