Hey c0d3-z3r0,
You can enable kicker transparency, but only in KDE 3.2 or greater.
If you've got KDE 3.2, just go to the "Panels" option in the KDE Control Centre (or right click on the kicker and choose "Configure Panel..."), then choose the Appearance tab. In the "Panel Background" section of this tab, check the "Enable Transparency" option, then choose "Advance Options..." to set the transparency value.
If you don't have KDE 3.2, I think you can get a (very ugly) kde transparency hack from
www.kde-look.org
Cheers,
Tim