Windows Explorer Hangs Browsing TIB

Hi

I have some backup files (quite large, about 150GB) which hold crucial files I need to restore. If I Explore the TIB file on Windows Server 2003, I will get 1 or 2 levels subfolders into the file and then Windows Explorer just hangs with the torch/flashlight moving where the contents would be displayed. This goes on for hours until I end the task. Similarly if I try to mount the file to a drive letter, Explorer just hangs.

I only need about 20 files but I can't get past Windows Explorer hanging.

Any ideas? Will Explorer get there in the end or should I start looking for a new job?