The site yz.designtechnika.com is not working...and I've searched on google and all I've found is skins and whatnot and not the actual file/installer/program.
Are you sure you were using Google? I searched for "y'z toolbar" and found a working link on the second page, and when searching for "y'z toolbar download" I found two working links on the first page- the same ones that Aphaits posted.
Is it just me...or didn't DesignTechnika change to GfxOasis? As in designtechnika.com no longer exists, and in it's place gfxoasis.com? But it might just be me. :)
Thought so, but I don't think they host the file any more, especially with out being a member. But that guy zingman over at the Neowin forums has all the Y'z stuff.