I've noticed a huge difference in how much faster multiple runtimes are in Poser 8 since Acadia was sweet enough to show me the way to actually do it.  It's not scary at all.   Here's the link to my silly question post and about the third or fourth post down, her response which includes links and a great sample runtime folder download link.

http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2794588

Just try it.  My poser doesn't crash hardly at all now since I'm doing this.  It took a little effort to get it set up, but IMO, very worth it.

DA