Have a look at Golfsmith Big Sheesh, the snake eyes drivers are very good and some of their smaller headed models are practically being given away ($60 for a head and $30 for a shaft) Failing that try one of the older Callaways, the Hawkeye VFT is still a great driver and there are loads of them out there these days since they were so popular when they came out.

5'8" is around average height in most parts of the world so the average shaft length should suit you. Being lighter than average you are probably better to go for a similarly light shaft, maybe about a 55-60 gram shaft (Callaways System 50 shaft would be ideal)

Good Luck,

D.