Angelique, I agreee that what you appear to have there is a phaleanopsis. Please hold back on the re-potting until we're certain.
I certainly would not attempt to divide a phal.
You can also find information on re-potting a phal here:
Easy Orchids - Re Potting A Phalaenopsis
I find my phals do very well on bark (my personal preference) in a North/East facing window .
For watering the Skewer method is an invaluable indicator of when to water.
Skewer use for watering of orchids
Let's have look at some re-sized pics before you start.