How do I go about rooting my Samsung Spica?

I have Samsung Spica I5700 that have capacitive touchscreen, and I used a touchscreen protector. Recently, I've noticed that the touchscreen often produces erratic movements, for example, if I put my still finger on the screen, the "cursor" will shake vigorously (sometimes very far off). This makes the touchscreen very unusable; countless of times I've accidentally flinged the page when scrolling, while touching the screen for small scrolling; countless of times, the screen registered scrolling as a zooming or unzooming; …

How do I sync my Facebook contacts with the contacts on my Samsung Galaxy Spica?