Hi Bar-code,

No problem - even though it is an unique experience and an industry first! 
There are advantages and disadvantages:
The disadvantage of having a Poser 7 party on Second Life is that people need to register, set up an avatar and become familiar with walking, flying and getting around in SL.
The advantage is that appearing as a 3D avatar can be particularly appealing to Poser folks who are constantly in a 3D world. In SL you can also cutomize your avatar, dress it up in different garments and even endove it with specific walk styles (not to mention dance moves:-)
So, there's a pro and con to all this.
If you changed your mind, I will buy you a (virtual) drink at the party. Deal?
Best,
Laslo
laslo@e-frontier.com