How can I reconnect to my server?

-The server for my work was showing up in My Computer (Windows 7) however it wasn't connecting, the little hard drive image had the red cross through it instead of being green. I right clicked on it to see if I could trouble shoot it, however I accidently clicked 'disconnect' and now the drive is gone from My Computer.



If someone could please tell me how to get it back I would really appreciate it!! There is no IT guy around to help and I really need to get on the server!

Thanks,

Martincall the computer guy