I am a Canon D60 user. I can print up to 11x14 without any problem.
I use PS first to make the interpolation at a resolution of 300dpi.
Many people on this forum mentionned a software that does marvel in blowing up digital pictures
Fractal Stuff
I never tried it but I will certainly do. Like I said I am a D60 Canon user and I bougth 2 of these babies.
Apparently the D60 was a marketing experiment from Canon (like they did with the nice defunct Canon RT). They plan to start selling the D90 soon.
I certainly don't want to renew my system every year and plan to use this one for 5 years.
Whith all computers (cameras) equipment, when one finds something that works; just stick to it...