Gaming challenges- help my GF install THIEF GOLD on her duo core laptop...

The latest in my GF’s laptop gaming saga… copied & pasted from the Eidos & TTLG forums… I’m getting desperate and going nuts trying to find answers for her…

My GF’s new Gateway laptop won’t/can’t install her THIEF GOLD and other THIEF games. She tried the “:\setup.exe -lgntforce” several times at it kept stalling at 94%. She did think she had them installed before but now finds no sign of them.
So she’s trying again with this 94% stalling as the result.

Here are her specs- any ideas of what to do?

Gateway NX860
Model #M685 T5500
Display: 17" WXGA Widescreen (1440 × 900 Max Res)
Processor: Intel Core 2 Duo T5500 (1.6GHz)
Memory: 1024MB 667Mhz DDR2 Memory (2-512MB)
Hard Drive: 120GB 5400RPM SATA Hard Drive
Optical Drives: CDRW-DVD Combo Drive
Video: nVidia GeForce Go 7600 (128MB)
Sound: Integrated Sound
I/O Ports: (4) USB 2.0 Ports - (1) IEEE 1394 FireWire Port
Network: 10/100/1000 Ethernet
802.11a/b/g Wireless
Pointing Device: Touchpad
Media Reader: 6-in-1 Digital Card Reader
Battery: 8 Cell Li-Ion Battery with Power Adaptor
Operating System: Microsoft Windows XP Professional (SP2)
Software: MS Works Suite 8.5