whatsdesk package name.

hii,

i have being looking for whatsdesk package name that i have installed on ubuntu few months ago.. but apparently no matter what dpkg query command i know, i just can't locate it..
for a software such this, the name on display is not the package name.. how one can locate it ?

any where to locate the package name of an unknown software which software name is totally not same as package name ?>

thankx

andrew