Welcome!
You can check
http://wiki.project1999.com/Player_List to see if any of your old friends found P99 (none of mine have).
There's a few casual guilds around, of course I'm biased to Castle.
[You must be logged in to view images. Log in or Register.] We do some raiding so it's not all casual but the raiding aspect is not required (and honestly, I pretty much solo exclusively due to real life being more important than the game, my constant AFKs would annoy me if I were grouping with me!)