how to run a web server?

Hi I did it before but am not able to do it again. I have windows2000 Professional. I installed IIS and then went to "default website" and "right clicked" and went to "new" and clicked "virtual directory" and created a foler inside "Inetpub-wwwroot-(new folder)" and i gave the path of this new folder as my virtual server.
I put a file created in frontpage by the name of "index.htm" but it is not opening when i write in the Internet Explorer browser as "\\computername\virtual directory name\index.htm" ? where did i do mistake coz i guess i did some big mistake and i forgot how i configured it earlier....it was so easy when i did it...grrrr :-) plz Help :-(