Firstly, gday and welcome to the forums, you came to the right place for a hand
Next, the only thing i can think of with regards your CTDs that might help in the immediate future is to set SH3 to run as a high priority program through task manager. In the longer term id consider upping the ram to 2 gig, but thats optional.
No doubt someone with a bit more technical expertise will be along shortly to help out more
