How to add a flash file on Virtuemart Home page

[Selina]

I am using Joomla 2.5.4 and Virtuemart2.0.2 to create website. I would like to add a flash file on the Virtuemart Home Page. I chose the sub- category "shop " and tried to add the flash to "Description" but did not work it out.
Please see the picture as below:


Would appreciate for any help!