Now's your chance to cast your ballot for the 2006 Tablet PC of the Year! (For the purposes of this award, UMPCs will compete in Handhelds.) Our Engadget Awards nominees are listed below, and you've got until 11.59PM EST on Sunday, April 15th to file your vote. You can only vote once, so make it count, and may the best tech win! The nominees: Fujitsu P1610, Gateway CX210 / M285, Kohjisha SA1F00, Lenovo X60, and Toshiba Portege M400.