1)Orkut Formatting toolbar
Description:This is a Grease Monkey script which adds a formatting toolbar to your orkut home page with huge collection of smilies.To install this "Orkut Formatting toolbar' Grease Monkey script,just click the link given below the script will be auto installed on your browser.
Click Here to Download it.

2)Click Here to Install greasemonkey in your firefox browser.
This is useful to use all the below scripts.

->DisasterNet.(verY Funny)
->OrKutPlus.
->D Devils Workshop.
->GrEase SpOt.
->GreaseMonkey is Here.
->Al☺k(A1) Smileys F☺r Orkut.
->Smiley Xtra lets you insert smilies from an online database into your forum posts and blogs, via a handy sidebar.