Hey! Thanks for the response!

I'd not thought of upping the RAM - I didn't realise that would help

According to Belarc Advisor, I think the graphics card is part of the motherboard, so the only way to boost that is an external card

That said - I took advantage of the sale here at the moment and bought Reality for Daz Studio, so more RAM rather than a new graphics card might be how I go forward now...