do u know which type of cd player fit in it?
does pioneer and kenwood fit?

Yea just about anything you can think of will fit. you probably need to get it done at a professional place, even circuity city or best buy, they'll put in a harness that'll make it fit just right. I'd go with a Pioneer if i were you. http://www.circuitcity.com/ssm/Pioneer-In-Dash-CD-Player-DEH-P80MP-/sem/rpsm/oid/116334/catOid/-13089/rpem/ccd/productDetail.do ..... that's the one I've got and I love it but ya don't have to go that expensive, I also had a Panasonic until that got stolen

but how come bestbuy and circuit city's web site keeping say that 06 civic dx does not fit into all in dash cd player

it should fit, just make sure you got the correct din harness to hold any CD player you install.

go to somewhere online, like crutchfield.com to see if the model cd player you choose to install is compatible with your new civic.

to put a aftermarket in you will probalby need a dash kit to put the radio in, and definatly a wiring harness to hook it up.