Try searching the forum for those of us who work a full-time or 9-5 job (keyword 9-5 should get some good links). There are quite a few of us working our VA biz around a full-time job!
I work on Goddess from 7:00-8:30am, and 7:00-9:00pm M-F and 8-noon Saturdays. I check/respond to voicemail/email during morning and afternoon breaks and at lunch time. I use my cell phone as my business line and encourage my clients to use email for contact. i DON'T answer my cell phone EVER! My default ring is 30-seconds-of-silence so the boss doesn't get annoyed by all of my personal calls (he doesn't hear them
). Also, the boss doesn't know Goddess even exists...