Thumbnail images for Application other than JPG or GIF like DOC , PDF, etc.

Hi ALL,

Standard configurations are availble to have thumbnails for JPG and GIF file application.

How to get Thumbnail for DOC, PDF .etc?

i have gone through some similar issues in SCN which suggests to use BADI for this.

Can anyone suggest any BADI's for this.?

Thanks in advance

Sanket Gadhe