We've recently upgraded to a Dell Dimension 8200, running Windows XP, 512Mb, Pentium R 2GHz and all seems OK apart from our e-mail software application. We use Quickmail Pro 2.1 which ran fine on our previous Windows 98 PC, but struggles on the Dell.

It either runs painfully slowly (including screen-redraw when typing messages etc) or effects other applications that are open (never many) slowing them down too.

Any ideas?