Hi, I'm new to ubuntu

[Max Brown]

I'm not sure if this is where i'm supposed to post questions, but i have
found that i can't use the add/remove programs feature because every
time i try to update my lists after i hit reload i get an error message

"Could not download all repository indexes


The repository might be no longer available or could not be contacted
because of network problems. If available an older version of the failed
index will be used. Otherwise the repository will be ignored. Check your
network connection and the correct writing of the repository address in
the preferences."

underneath this there is a list of url's 
if you can help please shoot me an email, it would make this the perfect
operating system, if that worked. 

if this is the wrong place to post shoot me an email and let me know,
sorry.