cannot install audio driver due to unverified publishers

http://i50.tinypic.com/20jpzrn.png

i am experiencing an incredibly frustrating problem with the windows security message "windows cannot verify the publisher of this driver" while i am attempting to install drivers for my audio device. the error will prompt during installation of the drivers, upon which i would choose "install this driver software anyway" but it would reappear again in 30-40 seconds. i could not get it to stop without closing the program trying to install the drivers. they are realtek ac'97 drivers (file name: 6303_Vista_Win7_PG537, obtained through majorgeeks & the realtek website). i have tried disabling user account controls/driver signature notifications through various methods, including the following:

i disabled uac notifications to 'never notify' through control panel > user accounts > change user account control settings

i disabled uac notifications through gpedit.msc (computer configuration > windows settings > security settings > local policies > security options)

i disabled driver installation notifications through gpedit.msc. code signing for device drivers was set to enabled, then in the options menu in the same window, "when windows detects a driver file without a digital signature:" it was set to ignore (user configuration > administrative templates > system > driver installation)

i disabled notifications through command prompt using the following:
bcdedit.exe -set loadoptions DDISABLE_INTEGRITY_CHECKS
bcdedit.exe -set TESTSIGNING ON

afterwards i ran command prompt as an administrator using the following:
bcdedit /set testsigning no



does anyone have any suggestions for me? haha
i would really, really appreciate any sort of help!


again, here is an image of the error & what i changed in gpedit.msc under computer configuration:
http://i50.tinypic.com/20jpzrn.png



COMPUTER SPECS...........


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alright, thank you sorry about that!

attaching specs in this post.