Thinking of buying a refurbished lap top as an extra computer.
It's a Toshiba T130-16W Windows 7 64 bit Home Premium. Quite a good spec in some ways but doesn't have a dedicated graphics card.
It has Mobile Intel GMA 4500M.
Would this be good enough to play Big Fish IHOG games?

I would imagine you'd be okay - IHOG's don't tend to be graphics intense.

The processor supports DirectX 10 (Shader Model 4).

Here's a link to the specifications -

Intel Graphics Media Accelerator (GMA) 4500M

Thanks Inland.

And what would your opinion be on a refurbished lap top rather than a new one?

Which refurbished laptop do you have in mind?
Is it the same model?

I have a laptop with Intel Graphics X3100, which is a slightly older type of Intel graphics that is also capable of Shader Model 4. It plays nearly all iHog's just fine, though there have been a couple that I had to play windowed to avoid jerkiness and graphics problems due to the card not being fast enough.