How to get size of a table

Hello,

I want to get size of a particular table. I have used the wizard provided by SQL Server Enterprise Manager. But it is giving wrong size. If the data of some cells has been deleted or some rows are deleted. It shows the same size which it shows for the first time. I have also used sp_spaceused but is showing the same behaviour as mentioned above. I deleted some rows from the table but is showing the same size.I want to know the size exactly, so that i can come to know that some rows has been deleted or data is corrupted. Please tell me the solution as early as possible.

Haider Ali Khan

sp_spaceused()