Yingrodriguez,
Your systembuider (the computer store) can order replacement media from Microsoft by following this link http://oem.microsoft.com/script/contentPage.aspx?pageid=555744&wt_ref=US_INF&wt_ref2=1OMR if they are a registered system builder partner.
Since you have lost everything, the above may not work for you. If your systembuilder cannot help you, please contact:
Microsoft
System Builder Component Replacement Team
Phone: (866) 230-0560 Fax: (661) 244-4401
Hours of Operation: 8 am - 5 pm (PST)
E-mail: sbcreplacea@msdirectservices.com