Is it possible to reinstall microsoft office without the disk?

About two years ago I bought my laptop and at the same time I bought Office 2003 standard Edition CD as well. It was working fine so far. Due to some problems yesterday my system crashed . Somehow after lots of troubleshooting I finally managed to get my system up but several applications and programs are now missing after the crash including my Office Suite. So I need to re-install Offcie again but the problem is I am not getting my disk and I have never used and seen it in past two years.

But as the product key might be still in my registries I wanted to know if there is any way I can install Office 2003 standard again without purchasing new office from Microsoft? Please help.

You may find the following Microsoft Knowledge Base Article applies:

How to Replace Lost, Broken, or Missing Microsoft Software or Hardware.http://support.microsoft.com/default.aspx?scid=kb;[ln];326246