problem with iis

[cyrus71]

hello,I am newbie on IIS, i drive win xp pro, and IIS 5.1about few month ago i installed IIS and i began practising asp, vb and c# it worked well,untill two days ago i wanted learn more about iis because it goes well when i typed http://localhost but i could catch my server when i typed http://my.ip.address from another computer, i have no router and dynamic ip adress.so i began to play with it to learn more and solv the problem, i goes in "default web site -> properties -> how directory " and placed a tick on write checbox and then i can not remember i got something about some list which want to be chosen i chose all of then and then apply, i dont know what i have done, i played a little with the embeded firewall on win xp, and know my little lovely iis stoped work complitly when i type http://localhost i get error message "the page cannot be displyed"another thing when i go to my iis and add new virtual directory, the virtual directory works well.very grateful for your help