Problem Need Help With Some Settings, Proxy Sever &

[funfun]

hi all, it s thick chris with a computor problem,

ive got an acer 5051anwxmi, ussaually no probs, i just had it in hospital with me and had to pressa lot of buttons to try to get it to work wi fi, that is,

if i open mozzela firefox, im stright on internet, no probs, but my yahoo & msn mesenger will not sign in as they used to?

it comes up with an error code, then says you have problems review your proxy proxy settings, key ports, and/ firewall settings in msn under options, or cliclick repair,

i try doing options and cant see proxy settings (have they another name) or i click re pair and get please check your browsewers ability to sign in????

its burning my head out, now ive broke it as i was messing in hospital to get it on, in the end i had to use a nokia spare with bluetooth to get on air!

any help much appricieated, and as useual, keep it easy for an idiot to understand,.

be back in a hour thanks a lot

chris