Windows 7: Documents saving issue.

I have all my documents (word, Publisher, etc) saved on my other hard drive, which is also where my XP OS is running. Everytime when I open a document from my current hard drive (Windows 7) it opens in 'read only' format, and I can't save changes to it. Unless I save it to my current hard drive, which I don't want to.
Is there a way to change this? Even on the attributes in the properties of the folder or file the 'read only' option is not ticked, but when I open it it is.
I hope someone can give me some assistance!

Thanks!!

Your other hard drive has permissions set that make it appear read only. Go to the folder you want to save to, right click and include in your documents library. You don't have to use the library if you don't want to but it will fix your permissions.

EDIT: Crap! That doesn't work anymore... You'll have to right click it, select properties, security and give yourself access OR just install this nice thing here Take Ownership Shortcut

Thank you so much baarod! That worked great!