Discrete graphics needed for HD recording?

My apologies if this has already been covered elsewhere. I'm a newbie and did my best to research it on my own, but just couldn't find a conclusive answer.

I'm planning to buy a ThinkPad R61 or T61 14" widescreen soon (hoping that there will be post-Thanksgiving sales so I can get the T rather than the R.) I'm not a gamer and most of the things I'll be using it for are not graphics-intensive. However, I do plan to buy a TV tuner and use it as a PVR in the future, and I wanted to know if discrete graphics would be necessary in order to record over-the-air HD.

The integrated graphics would be Intel GMA X3100 GM965 and the discrete would be NVIDIA Quadro NVS 140M (128MB).

Other potentially relevant information: I'm planning on going with
- Intel® Core™ 2 Duo T7300 (2.0GHz 800MHz 4MBL2)
- 1 GB PC2-5300 DDR2 SDRAM 667MHz SODIMM Memory (1 DIMM) and then adding another 2GB myself
- 120GB Hard Disk Drive, 5400rpm

And the two tuners I'm debating are
- AverTV Hybrid ExpressCard (which I prefer, since it will do hardware encoding when I'm recording cable channels)
- Happuage HVR 950 USB (which looks like it will be cheap on Black Friday)

I appreciate any advice, if anything I've posted here would seem to imply that I'm misunderstanding something crucial about laptops / graphics / tv tuners, please let me know -- like I said, I'm new to this.

 

I'm pretty sure that the GMA x3100 will suit your needs, but it would be the bottleneck of your laptop, if you have the money now, I would get eh NVS 140M
You may want to upgrade your HDD to a bigger and possibly faster one.