Hi Mate,
You say you have flashed the Xecture 2 bios to your modchip, but see no physical signs that your bios is working because the M$ Dash has booted.
Well, then your d0 point isnt connected proberly and/or your modchip isnt seated right. The green light on the modchip is telling you that the chip is getting power from the xbox, but the only signs you get that the d0 pin is correctly aligned is the hacked bios booting.
You should be seeing the word "Xecuter" underneath the XBOX text on the bootup screen instead of "MS" if your hacked bios is being booted to.
Try getting hold of a colour Modified Bios so you can be sure your Bios is being booted to, and double check the d0 connection.
There is no point in trying to install any dashboards until you are certain this first step is succesfull as it will just cause you stress