Here are our guides for the K Series of Sony Ericsson phones.

Sony Ericsson K500/K510i Housing Change Guide: Pictorial guide for both phone handsets.
Sony Ericsson K700i Housing Change/Disassembly Guide: Detailed guide on changing housing.
Sony Ericsson K750i Housing Change Guide/Instructions: Neat disassembly guide with pics.
Sony Ericsson K770i LCD Change/Dismantle Guide: Nice guide showing change of LCD.
Sony Ericsson K800i Housing Change, Dismantle Instructions: Pictorial guide on changing housing on the phone.
Sony Ericsson K810i LCD Change/Disassembly Guide: Thorough dissection of the phone, clear instruction.
Sony Ericsson K850i Disassembly/Dismantle Guide: Good guide with pictures.