Password protect access to windows partition from mac osx

Hi all,
I have seen many posts where people are looking for a way to password protect bootcamp during startup. This is not what I require, I have on my OSX desktop both my HDD/partitions (i.e. MAC OSX & Win7)
As you know I can simply double tap my way from here through all of my win7 directories.

Is there a way to put a password on this partition from the mac desktop? so that If i try and double tap into the windows partition it will not allow me without successfully entering it?

any help would be greatly appreciated

Thanks in advance

I have no personal experience with this, but it looks like you will need encryption software. Here's one:
TrueCrypt - Free Open-Source On-The-Fly Disk Encryption Software for Windows 7/Vista/XP, Mac OS X and Linux

Here's another. They indicate it is for external drives only though. It appears that when you insert the USB stick, it'll prompt you for a password before mounting. I don't know how this would, if it even could, work for internal drives. If it does work, you'd probably have to leave the drive dismounted and use Disk Utility to mount it each time you want in. This may render the partition unbootable though. That's all pure speculation on my part, but still you might find it useful.
Keynesis

As lifeisabeach recommended, use TrueCrypt. It's easy to install and remove. Just don't forget the master password!

I was looking into TrueCrypt over the weekend.
It is a good solution but I would have thought that some feature on my OSX app would have been able to enable this.

Thank you both for the help I really appreciate the tip guys