Some brief but good information i found on spiders in dreams.

[DancingFlame]

SPIDER
To dream of a spider, denotes that you will be careful and energetic in your labors, and fortune will be amassed to pleasing proportions.
To see one building its web, foretells that you will be happy and secure in your own home.

SPIDERS also are common images during confusional arousals from deep, non-dreaming sleep. Sleepers may awaken in dark rooms surrounded by spiders"on the ceiling, in and on top of their beds.

A spider may symbolize the number 8
Heightened sensitivity
Tuning into your awareness
An injured or disfigured spider may indicate needing to rebalance your energies
Being industrious or helpful
Irrational or hidden fears and phobias
Patience
Balance ...

Spiders in a dream are a sign of general good luck; to kill one signifies good news. If it was spinning a web, it augurs approaching money; if it was climbing a wall, it's a harbinger of success in all that concerns you most deeply.

Spiders in a dream are a serious danger signal This can mean female intrigues aimed at ensnaring men, and refers to the cold, calculating nature evident in some women.
Spiral ...

spider web
A spider web can represent:
A trap, or feeling wary about being trapped or manipulated
A business or money-making endeavor
Random searching, as a web catches anything that happens along ...

heres the link for more: http://en.mimi.hu/dreams/spider.html