Honestly, that laptop looks fine for FFXIV, if you turn the settings down a little.
What are you FFXIV settings right now?
I looked up the M9750s specs, and according to what I found, it origially had a Dual Nvidia GeForce Go 7950GTX GPU running SLI option, which should be adequate. The Core 2 Duo 2.33 is not ideal for FFXIV, but should be able to handle it if you turn off other programs and non-essential services, etc.
The biggest bottleneck I see for you running FFXIV, is that the M9750 seemed to come with 2GB Ram. Upgrade this too 4Gb.
I just posted a guide for running FFXIV on my Macbook Pro which also has a Core 2 Duo processor, but has a single GeForce 320M. The GPU in your laptop rates significantly higher than the 320M, so with 2, you should be able to play with much higher settings than I can.
A lot of my guide may be able to help you, just to configure windows settings. If your laptop does not have the second Nvidia GeForce Go 7950GTX in it, you can probably pick one of these up cheap and add it.
All in all, I would say, make sure you have 4Gb Ram, optimize your OS and your FFXIV settings. If you already bought the CPU upgrade, great, if not, try to adjust settings, upgrade RAM, and make sure you have the dual Nvidia GeForce Go 7950GTX set up, or get it. Another option is to try to find 2 other good GFX cards to run. Check your system, but the 7950GTX should be a PCIe card, so the laptop should have 2 PCIe slots for new cards.
Edit: Link to my guide, if interested. I'm running smooth with a 856 bench, although settings are low. http://ffxiv.zam.com/forum.html?forum=152&mid=1290806646287024552&page=1 Edited, Nov 26th 2010 8:55pm by Leodesol