Sorry for the confusion. Yes still need some help. Though the fluorescent was the first priority, but I still want to get the ceiling fan which is connected to the dimmer switch working. Now I'm trying to figure out how to tell if the problem is a bad switch or bad wiring.
I'm 90% sure that with what you described the dimmer will be the problem considering you do have some amount of electricity (I think, may be misreading your posts...). How confident are you in pulling it from the wall for a look? (Turn off the breaker first!!!). Typically, older dimmer switches that are expanded contacts and exposed (no enclosure on the back) will get dirty/dusty and lead to issues. Most electricians would tell you to switch to a protected switch.
FYI, not an electrician.
Some things:
(1) post pictures if you can
(2) when you say 'flicker', what do you mean?
(3) how old is the house? Any re-wiring or additions done?
There is a very useful set of tools called circuit breaker finders that you can use to track the line from the breaker box, into the attic, to the switch. Considering getting one as (like a voltage meter) they are EXTREMELY useful and basically last forever.