[I have 3 simple questions please]

Hello all!
I stored my site on godaddy.com (some crappy,commercial and mass hosting company),
First of all ,I dont really know what server exactly running there? they write that "Linmu shared hosting" I d'ont familliar with this one and they don't give too much options to manage the server itself.

I need to solve 2 problems:

1)How I can disable the "Web page has expired" page? I kinda dont want users get this messages..
2) I want to protect the access to any folder in the site except the main one
  for example I want to allow www.blink.com/ and protect with password the www.blink.com/x
-I still want to access them , but I want the browser to ask a password for accessing the pages out there..

Thank you very much,
Sasha.