Server password / apache password protect

Dear Ibiblio:
We wish to password-protect some HTML pages of www.friendsoftibet.org, site hosted with Ibiblio. Could you please tell us about ‘server password’ or ‘apache password protect’ and explain similar pages could be protected since different hosts have different ways of doing the same basic things.

We look forward to hearing from you at the earliest.

Regards,
Sethu Das
sethu.das@friendsoftibet.org