"Before I d/l this, is this intented for PBW only, or can solo players use it also?"
It can be used for both, I'm quite happy with how it does solo play as thats my main mode of play as well. The Borg are a challenge as is the regular AI's (the Red Gauntlets, Drushocka, Norak and Cephalopeian are quite nasty and the EDF are great later on, very much Wave Motion gun happy
).
I will be adding more AI's later, intend to include an updated Krill, Cardassian, Star Wars Empire, Comet Empire and another AI only race the Pirates.