No you don't need savestates just to enable MDECs... you can enable them in ePSXecutor, or do the following (if you're comfortable editing registry n' stuff):
1. Run regedit
2. Navigate to HKEY_CURRENT_USER\Software\epsxe\config
3. Make sure "MdecEnabled" is set to "0" and "MdecTiming" is set to "1"
voila... that should do the trick.
1. Run regedit
2. Navigate to HKEY_CURRENT_USER\Software\epsxe\config
3. Make sure "MdecEnabled" is set to "0" and "MdecTiming" is set to "1"
voila... that should do the trick.