Uploading files

Hi all ..I'm new at this nice forum ...I needed some classical sheet music..Some guys advised me to go to some sites..but no use to down load anything (adress is not found)...anyhow I asking kindlu ...Is there a pssibility in this forum that some one upload a file to let another one ..download it???I have a friend & a member in a piano forum ( http://www.pianophilia.com)told me that in his forum(Pianophilia) he can do that ...Please inform me ...Thanks to all ..Best ....Miro