Vista - Cannot delete a file :(

Hi guys, i've been searching the internet for a few days now, but all I could find is a similar thread, resolutions of which didn't work.

I have a Vista Ultimate x64, which I reinstalled a few days ago. I also have a large drive(D:\), where I keep some of my software, which i don't use regularly or which does not require a performance of my main RAID 0 (C:\) setup.
Before reinstallation I didn't remove old software from drive D:\. Didn't think I had to, afterall it's not the first reinstall that i'm doing and it would be kind of stupid. Anyways, to the point...
I have a folder "D:\Program Files (x86)" with a bunch of software. I was able to delete all of it manually, but a few folders, created by adobe acrobat.

I am logged in as Administrator (actual administrator, not user with admin. perm.)
UAC is disabled
Drive is owned by this acct.
I was able to delete everything manually inside "Adobe\Acrobat", but "D:\Program Files (x86)\Adobe\Acrobat 9.0\Resource\CMap" just would not delete, getting a "You need permission to perform this action" message.
Folders and Files are set as "Read Only" and when i'm trying to uncheck, i'm getting "You will need to provide Administrator permission to change these attributes" message, after clicking "Continue" i'm getting "An error occured applying attributes to the file" "...filename..." "Access is denied".

I have an Acrobat 8.0 folder from like a year and a half ago, which does the same thing......
All Files have "RA" in the attributes section of the details tab and Owner is "SYSTEM"

Any help is greatly appreciated!

Have you tried in safe mode?
It sounds as if abode is locking the files for use.

Look here;
Take Ownership of file

I've tried in Safe Mode, didn't help.
I've also tried taking ownership a few different ways, but that didn't work either.
However, what did work is when I manually went into "security" tab of a single file and noticed that Administrator permissions are set as read only. I've added full control and was able to delete it. After searching how to do it as a batch, i began to dig deeper, and thanks to your link, i somehow came across this thread Easier Way to Take Ownership and Grant Access Files or Directories in Vista » My Digital Life and it helped me alot.
I just used precisely these commands
takeown /f %1 /r /d y
and
icacls %1 /grant administrators:F /t
where %1 is a full file or directory path and it worked.
Thank you very much for pointing me in a right direction
I don't remember which thread lead me to that last one. It's all kind of blurry, considering that i've been trying to find a solution for the past few days.

Nice to hear it is sorted.

If you download Malwarebytes' Anti-Malware, it contains a tool called FileAssassin that might work if you need to do it again more easily in the future.