Can you run P99 and regular EQ on same PC?

[kaluppo]

I read through the sticky here on getting started with EQ and if I understand it right then it seems impossible to have EQ and P99 launch icons on the same desktop. But would it be possible to have one PC with two separate windows login profiles which would have two separate desktops and have user1 login run P99 and user2 login run EQ? Or would I literally need two separate computers to be able to switch back and forth from P99 to EQ?

[kedrik]

I would like to know if this is possible too. To install both P99 EQ and DayBreak EQ on the same PC. I'm thinking you might be able to because the file directory for p99 Everquest will be different from daybreak/pay-to-play Everquest directory?