hidden taskbar how to get back?

I'm not quite sure how it happened but somehow while having problems starting up the dvd drive in my computer for the first tiem I clsoed a window and somehow hide the taskbar

I now havbe nothing winning on screen but a screensaver !

i hit the vaio assist button and tried everything it suggested but

hitting the windows button on the keyboard didnt help

finidng the taskbar icon and dragging it didnt work

leftclicking while i had the pointer on the double header arrow taskbar icon didnt work

i can assess vaio and the assist area and windows open but no taskbar so I cnat use the net to get remote assistance and I cant even log on or off probably

there is a dim possiblity this is virus i was trying to donwlad freeware off a dvd ?

but i think I somehow minimized or hide th taskbar

nothings showing but the screenscreen

i dont have the show desktop or start button even!