Runtime error - video card problem?

[Tee Ess]

I got an error message

Silhouette:
Open GL implementation does not support
rectangular or non-power-of-2 textures.

Microsoft Visual C++ Runtime Library:
Runtime Error!
Silhouette.exe This application has requested the Runtime to terminate it in an unusual way.
Please contact the appication's support team for more information.

Does this mean my video card is wrong?
I have Asus A8V motherboard and AMD 64 3200+ CPU with 1 GB RAM

[paulm]

You will probably need to upgrade your video card, or at least the drivers first. You didn't list your card, but it probably doesn't have the texture support Silhouette needs.

[Tee Ess]

I'm trying to determine the near-best card to buy without breaking the bank.
Seen at NewEgg.com:

eVGA 128-A8-N350 Geforce 6600GT 128MB GDDR3 AGP 4X/8X Video Card - Retail
Chipset Manufacturer: NVIDIA
Core clock: 500MHz
D-SUB: 1
DirectX: DirectX 9
DVI: 1
Memory Clock: 900MHz
Memory Interface: 128-bit
OpenGL: OpenGL 2.0
PixelPipelines: 8
TV-Out: HDTV/S-Video Out
$129.99

Apollo 6800 128-RD Geforce 6800 128MB DDR AGP 4X/8X Video Card - Retail
Chipset Manufacturer: NVIDIA
Core clock: 325MHz
D-SUB: 1
DirectX: DirectX 9
DVI: 1
Memory Clock: 700MHz
Memory Interface: 256-bit
OpenGL: OpenGL 1.5
PixelPipelines: 8
TV-Out: S-Video/Composite Out
$139.99

eVGA 256-P2-N527-AX Geforce 7800GTX 256MB GDDR3 PCI Express x16 Video Card - Retail
Chipset Manufacturer: NVIDIA
Core clock: 470MHz
DirectX: DirectX 9
DVI: 2
Memory Clock: 1200MHz
Memory Interface: 256-bit
OpenGL: OpenGL 2.0
PixelPipelines: 24
TV-Out: HDTV/S-Video Out
VIVO: Yes
$449.00

But trying to get sub-pixel shading info or whatever I need is elusive.
Any recommendations?

[paulm]

A 256MB card is preferred for film work. You can get the 7800 GT (the card I use), which is much cheaper than the GTX, and almost as fast, or even a 256MB 6800 series.

[Tee Ess]

Graphic cards that support pixel shaders are preferred I notice.
- Not that I have any idea what a pixel shader is, mind you. I'm still just a bit confused by the numbering system of the cards.
Bigger doesn't seem to always be better.
No real question here, I guess.
Thanks for your suggestion.