If you have the Dell System restore you can use that and you will not need a install CD
http://support.dell.com/support/topi...g=&toggle=&dl=
If not, You can get a reinstallation guide specific to your Dell here
http://support.dell.com/support/topi...n&s=dhs&~ck=mn
This is a great guide for reinstalling on a Dell:
http://www.djdenham.com/Install%20Procedures.htm
You can request a replacement instalation cd here:
http://support.dell.com/support/topi...doclang=en&cs=