Need help accessing desktop on old HDD that I made slave in new pc

[heater]

I fried my motherboard last week. My new pc came today. I took the hard drive out of my old box and added it as a second hard drive to my new one. When I go to access my old desktop folder, I keep getting the "F:\Documents and Settings\Desktop access is denied" message. I assume that this has to do with the user account that I had created on my old pc.

When I right click and go into sharing and security at the top it says: "To share this folder with other users or this computer only, drag it to the Shared Documents folder."
I am assuming that dragging my old desktop that is now on my F: drive into the Shared Documents folder on my new C: drive is a bad idea. Is it really okay to do this or is there some other way for me to work around this and gain access to all of the contents on my old drive?