The account setup is a lot different now than it used to be. Instead of signing up through the EQ client like it used to be, clicking the account button should launch a browser and account maintenance is now done on the Sony website.
Having the same problem with a Radeon 9200 PCI card. Upgraded from GeForce MX 440 and after installing drivers I reinstalled DX9. Rebooted and it worked fine the first time. Now everytime I boot up PC, I get the 'No 3d device found' message.
I have found that if I run dxdiag before I start EQ ...