I keep getting "You need permission to perform this action"

Question

I keep getting "You need permission to perform this action" when trying to write to a 1TB FAT32 drive attached and shared properly 
I am having exactly the same problem with with the permission blocker on all my computers. I also have full owner/admin (whatever you want to call full ownership rights) for my 2 PCs and 1 laptop. All are able to connect to the internet and use and extract files off of the 1T external hard drive (which is connected into the router as a network drive with a USB cable).
But... When I attempt to write "TO" the drive, that..is when the retarded 'no permission box' comes up.
I have tried differant users, matching names and passwords to the accessing computer and with users being members of the admin group with read and write access but no luck.
All of the linksys support only gives XP examples. i am running 64bit windows 7
Either exactly the same thing, or something very similar was happening when I 1st hooked up this router almost a year ago. The tech guy over the phone from linksys fixed it by installing a patch the same way they would do a hard install of the firmware ( I'm guessing it was an early version of a win7 patch). Hmm...  Strange that there are postings of this problem I am once again facing, BUT... NO solution posted. Curious; I deffinately would have thought this problem would have by now, after all this time, been posted on the FAQ with a simple fix. Obviously my findings for a solution are MUCH less than expected.
From: 1st time dissapointed in linksys.
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Answer 1

Woo Hoo! I have found the solution to this problem on my own after MANY, MANY hours with tech support from Symantic(for Norton360), Cisco Linksys(for the router), and Network Magic (for the software that comes with the Linksys wireless router). Symantic was only able to uninstall norton and reinstall it and said there's nothing wrong with their software and that there's nothing more they can do.
Network Magic basically did and said the same.
And... Last but not least, Cisco. Cisco Linksys Basically did the same as the others for the firmware but, they then came up with the bright conclution that it must be a defective unit and they will send me a new one.
Well... That was not good enough for me; all of my equiptment (including the router) has been working great since the 1st setup about a year ago.
Well... Here's the way I fixed it:
Once the network drive is mapped properly, go into 'computer', right click on your network drive, choose properties, open the security tab, click the edit button, and there you go. Now you should see the account that keeps telling you the no permission from it. If it is there as it should be, click on that account to highlight it and then pick the permissions you whish to have. Click apply and ok. You should now be able to edit, add, remove, etc. your files now.
My only problem with this is: Where did this account come from and why did it default without editing permissions, AND MORE IMPORTANTLY (you'll find out if you try to do this) WHY CAN I NOT REMOVE THIS ACCOUNT. When/If I find out the answers to these final questions, I will post it here. So, if you are iterested in this situation, check back. I'm deturmined to get to the bottom of this.
For now, I'm gong to let Cisco send me the new unit because this mysterious new account may be a hacker that has entered our machines through the router somehow. If this is the case, my theory for how this can happen is: all linksys units come default with easy access with a user/pass as admin/admin. I would have to strongly suggest that you go into your router cofiguration under the administrations tab; personalize the router password AND under the storage tab; in the 'User Management' section, click on the 'Modify' button and personalize the admin password(make sure to write down your new passwords and what they goto