[Wine] Not working?

[TweFoju]

I searched everywhere on this forum no one seems to have this problem yet

but i just installed 11.04 and then i am about to get Wine

followed the step on the website

adding the ppa already

then i click on the link to the 1.2 installation and then firefox ask me to open it with the Download manager and so i did

but then i get this

Failed to download package files

Requires installation of untrusted packages

i found this thread which say it should fix it

https://help.ubuntu.com/community/SecureApt

but sorry, i still do not understand what i have to do, is there more simpler command that i can just copy to get the wine to install?

thanks guys