2000 user can't get back on the net

[BronxBoy1378]

Looking for some help....In an attempt to clean up my hard drive, and remove "junk" (spyware, old programs, etc) off the computer, I deleted numerous files that I "thought" were not important.  Now when I attempt to launch internet explorer I'm not able to connect to the net.  The modem/router is worker properly because the wireless laptops in the house are working fine.. Also, I deleted the files in the recycle bin before I discovered the problem... All of the software installed on the hard drive is working fine (office, Excel etc).....Any advise as to what to check?
I have try to "restore to last known good configuration" without success..

Thanks

[GX1_Man]

Do you have a real Windows CD?

[ale52]

Before you do this, MAKE SURE you have the real Windows CD as suggested by GX1_Man.

Open Control Panel/ Add/Remove Programs / Add/Remove Windows Components.  Un-tick Internet Explorer / reboot / go thru the same process only this time PUT a tick in Internet Explorer.

Alan <><  

[BronxBoy1378]

Yes, I do have a 2000 Pro CD..I will give your suggestion a try...Do I need to backup any of the files I have prior to running the windows CD??

Thanks again for the help..

[GX1_Man]

You should always have important files backed up anyway. THis is especially important when tinkering with the operating system itself.