your board is unsupported on win7, you should have checked that first, sorry.
simply don't use the sleep mode and the front panel
I did check and knew that an out of production board wouldn't have passed "Windows 7 Logo" test. However according to the following link (http://www.intel.com/support/motherboards/desktop/sb/CS-008326.htm) the DG33TL will be supported for "drivers only," They still don't seem to have supported the audio drivers, and I am not sure what the video problem might be.
Anyway I needed to move off of XP for other reasons, and if absolutely necessary will upgrade from the DG33TL, but would prefer to be able to reuse my Core 2 Duo processor and DDR2 RAM.
well, you should upgrade. get a ddr2 board like the DP43TF or DG45ID - not really expensive.
Okay, I have had success on the front panel audio. I downloaded the Vista 32 driver (Audio: IDT* 92XX Driver) and both Headphones and microphone work fine on the front panel.
Unfortunately even with the Window 7 Intel® Graphics Media Accelerator Driver, the system reverts to a generic non-PNP monitor and loses the optimum resolution settings for the SyncMaster 906BW.
A little progress at least.
I have solved the audio problem, as noted, but even with the Window 7 Intel® Graphics Media Accelerator Driver, the system reverts to a generic non-PNP monitor and loses the optimum resolution settings for the SyncMaster 906BW, when it wakes from sleep mode.
in bios setup, putting the ACPI mode to S1 (default is S3) doesn't allow the computer to go into full sleep mode, but it when it awakes, it hasn't completely forgotten about the monitor's optimum resolution settings.