What I would expect to see is for the Administrators group To have full control permissions
If you wish to access the drive without any UAC prompts (assuming it's on) you will also need to give your actual user Full Control Rights to either specific folders/areas on the drive or the whole drive (this is due to the dual token security that applies on Windows 7)
Applying the rights to the root level should in theory cascade down the folder tree to supply these rights to all areas.
However this is not always the case, so you may see some errors - if these are for obvious system areas ( recycle bin etc) then you can simply OK and ignore - if you have issues with normal folders you may have to apply permissions at lower levels .
As this possible non cascade of permissions applies to ownership too, you may have to also manually take ownership.
There is also an option in advanced permissions to replace on sub containers with the rights of the current location - this can be useful as it allows you to set the permissions you want once and then duplicate these across the complete sub tree
This will normally only have to be done once and is often caused on external drives as when we upgrade the OS or multi-boot the NTFS permissions for the old OS or Other OS are also on the folders and files