Duke, for the PC industry it all depends on what you do.
In a cheap company a tech. support person can make RD$10,000 and a programmer can make RD$16,000 a month. In a good company these can make RD$25,000 and RD$35,000.
Good salaries are on the rise but you have to look hard. I would recommend buying the Listin Diario, the leading Dominican newspaper, so you can check out rent and furniture prices.
But, just to let you know, a bed will cost you RD$6,000 plus RD$2,000 for the frame. And a dining room table will go for about RD$12,0000 cash. And a refridgerator will run you anywhere from RD$6,000 to RD$16,000.
Be very careful in moving to the DR. Make sure you're working with a serious company. If you see a ANYTHING that bothers you when you visit them STAY AWAY. Don't think things will get better or they'll have to effect on you.
Make sure that it's an established business and NEVER a startup. You may find yourself out of a job in a week.