try these .. most will have chips or "no solder" upgrades ,,,, I think only one has a DIY no solder upgrade
www.dvdchips.co.uk
www.dvdireland.com
www.dvdlibrary.co.uk
www.dvdmods.co.uk
www.dvdupgrades.info
www.linkonline.co.uk
www.mailuk.com
www.mulitregionmagic.co.uk
www.techtronics.com
www.upgradeheaven.co.uk