Seems like someone succeeded according to this:
http://www.robertbeal.com/528/mount-ext3-in-windows-7-x64" adic_tech says:
29 March, 2010 at 8:22 pm
YES ! Its working without annoing UAC confirmation!
- enable Administrator account (net user administrator /active:yes )
- set Administrator password (net user administrator *)
- create a task in Task Scheduler to run as Admin at strartup the moutvol command
Succes!
adic"
But maybe you can use a NTFS partition instead and access it from Linux that way? Of course it depends on what you want to do and how many hard drives you have and such. Just an idea...