I completely understand because I am in the same boat.
In this game, it is very important to have the latest
browser/flash combination available for the platform.
I am playing constantly on older machines, and that
issue is the main problem. If you have WIn2000 or
later, download Firefox 12 or Opera 10 and load at
least Flash 10.1.102.64. (which is the only one available for
Win2000) If you have a Powerbook, download
Firefox 3.6.28 (which is the latest supported browser
for Motorola PPC) or Opera 10 and flash 10. If your
machine is less than a Pentium 4 or PowerPC G4,
it is probably better to go to another "stronger" machine
that you have with a better video card and more memory .
bblackh1