Guys I am having problem restoring the database from a created backup file..

Actually the situation is like this:

1> I created a backup for my database from my office

2> I mailed that database to myself so that i could use it in my home..

3> I tried to restore it in my home

Note : I am using the same version of Sql server in office as well as home

4> I am getting an error Sql Network Interfaces Error 26 when i am running the application using that restored database...

The details of error is :
http://s19.postimage.org/iq7lrm5oz/Error.jpg

To my knowledge i have to change the server name and use the same username and password whatever i am using in my office...

Plz give suggestions...