Greater resolution from VGAtext

Very simply, is there a way to change the resolution in the VGAtext files supplied with the SimpleIDE?
I've been using the VGA_HiRes_Text object in Spin, but I'd really prefer to work in C, which I'm more comfortable with.
I think this evening I'll try cranking VGA_HiRes_Text.spin through the spin2C utility but, having never used it before, I am not optimistic about the outcome.

Any other ideas out there? I'm truly very surprised this hasn't been addressed... well, at all really.

Thanks for at least the read through.