Time Machine permissions problem

I recently upgraded to a new iMac and I used Migration Assistant to transfer my old user and apps over.

After I was done I used the same time machine and inherited the backups when prompted.

There's something I want to retrieve from a few weeks back but then entering time machine all of my folders are locked out with the negative permissions sign.

Going into "get info" doesn't allow me to modify access.

Any ideas?

justperry said:

What is your User identification number now on the Mac?
You can find this in Users & Groups, unlock the padlock if it is locked, right click on your User account in the left pane and select advanced, it should be 501 if there is only one User on the Mac, if it is different you can get into trouble like this.

Click to expand...

It's got me down as 503, I am the only user on the Mac. Guest account is disabled. Where do I go from here? I'm guessing it's not as simple as typing in 501??