Royal Cat: Sun Scorpio and ASC Leo are an interesting combo. Scorps like to be private, secretive while Leos are all about bravado and showmanship. Chatty and social Gemini works well w/the Leo ASC, but again, Scorps don't like being so open! I'd say that yeah, most ppl probably only get to know the open friendly you, and are probably surprized by a underlying Scorpian intensity! Those who get to know the Scorp you will find that you are actually very loyal and closely tied to family and roots.
allibee: to see if you have a grand trine, look at your water planets. If they are all at the same degree, or very similar, (ie. 11 in Cancer, 14 in Scorp, 13 in Pisces) then you've got one! You have a nice amount of soft aspects in your chart. Trines and sextiles are deemed the 'easiest' ones, these things just come.... but then again, they can also denote a laxity on the native's part b/c they've never had to work hard for those things. I'd look though at astro's chart to see how wide the aspects are b/c astrodienst tends to allow for *very wide* orbs!! Up to 10 degrees in some cases! Generally, the wider the orb, the weaker it is.
MCs are the highest point of a chart. ASC/DC are the horizon. Yes, it "happens" when you are born, just like the positions of the planets. This is usually the angle connected w/goals and career.
The predominance of Neptune and Pluto to personal planets plus the concentration of water suggests that your emotions are very profound. Spirituality and depth of feeling is something you are comfortable with. Watch out for that Mars conj Pluto if it's a tight orb, it packs a punch!! (not necessarily in a bad way. How it plays out depends on where it is, other aspects etc)
Keslynn: yes, those are very harmonious
Moongold: happy belated birthday! Yes, those would strike a good balance b/w practicality and spirituality! I think that Pisces moon and Cappy sun might have their differences. Pisces 3rd moon is very sensitive and desires to communicate this, while Cap ASC wants to keep a stiff upper lip. Perhaps when you were younger you sometimes came off unexpectedly emotional? Moon and Sun seem to get along better, seeing as how Sun is in Pisces' house of 12th.
lunalafey: you must be an excellent worker!!!! Detail conscious and efficient Virgo plus ambitious Capricorn get on very well on the job scene. However, like you said, you might have difficulties expressing strong emotions or entertaining impracticalities. Although I don't think you come off as an ice queen, impersonable... I'd expect that more from air signs (like me ^_~)!