Thanks mate.Following are the carputer configs.
Asus M2N68AM SE2 -Motherboard
AMD Athlon X2-Processor
2GB ddr2 ram
160 watt DC-DC psu with ITPS.
7" touchscreen LCD.
Cabinet was made from my old cd player(a DIY)
Mercury ext. DVD writer(not fitted yet as I need a usb extension)
160 GB pata HDD
Its now directly connected to a JBL CS1215T basstube(12") via Sony Xplod XMGTX6042 amp(4 ch.).
My Speakers are all pioneers.
2 ovals and 2 front speakers.
Parts like motherboard,processor,ram,etc are available in the local market.
And what I found it difficult was sourcing the screen and psu.
I have done it myself that too a DIY.It was difficult for me to find any carputer installers here in cochin.