do you have another computer? if so, just yank that hard drive out, and set it into your second computer as a slave drive, and that way you can recover your data.

I am afraid that you will have to try repairing your installation of windows, or re-installing if that fails, it is imperitive that you remember the admin password, if you cant just dont set it, most...

when your system boots, hold down F8 and try last known good configuration, this may help reset your registry, and for furture DONT MESS WITH THE REGISTRY!

sounds like your network administrator has ICMP blocked, ICMP is the protocol that Ping uses to work, if it is blocked ping isnt going to work.

as for the files, do you have them shared?

he also may need to check his router to see if it will allow ffor this.

Okay, I see the issue here, you are using a home router, linksys makes a good router, one of the flaws though is that it only had two interfaces, one for the internet, and the other for the 4 or 8...