Probleme woody to sid

[Mohammed SLIMANI]

Hello, I am new in Linux, I installed debian woody 3.0r2, and with a lot of difficulty I managed to make work my connection ADSL, then I wanted to pass to SID because I use my pc as workstation (a compaq evo n1020v) and the graphic packages of the woody is very old, so I edited the file /etc/apt/sources.list to change the woody by sid (I left the security line) then I have make: apt-get update it connects, and it begins downloading... after it stops with an error like : E: Error while processing packages xxxx I do not know what to do, please help me, and sorry for my English is too bad :)