I run Photoshop 7 (32bit) and DAZ 32&64 on my 64bit lqptop. I have 2 external 1.5 t-bite drives and i have no problems. os is win7.  DAZ will run, but it is all in how you set it up.  So, yes! it may be good for you to get intouch with DAZ they are very good at hepling get set up, I have called then a number of times and will do if i need them.