actually if they have been consistent, if you just follow these steps you'll have a minidump next time which is a lot smaller and you can just zip and attach it to your post. To ensure minidumps are enabled:
Go to Start, in the Search Box type: sysdm.cpl, press Enter.
Under the Advanced tab, click on the Startup and Recovery Settings... button.
Ensure that Automatically restart is unchecked.
Under the Write Debugging Information header
Select Small memory dump (256 kB) in the dropdown box (the 256kb varies).
Ensure that the Small Dump Directory is listed as %systemroot%\Minidump
OK your way out.
Reboot if changes have been made.
That will ensure you produce a minidump next crash.
Given the age of the motherboard my guess is you are using a vista driver
in win 7 and it's crashing on you.
Once I have a minidump I can tell you which one(s) are responsible.