InfoPath Dev

I have a page where the user will select option1 or option 2 and when the user select option 1 and clicks on the next button it should launch iew1 that is related to that button. For example drop down list SL Office will launch view1 when clicked on the button. What rule/formula can I add on that button so that it will launch view1 when dropdown list SL office is chosen likewise when the user chooses PC Office it will launch View2 when the button is clicked on the same form.

Yes you absolutely can!  For the button you need to open the rules manager (if using 2010) and create a new Action rule.  For this rule, set a condition that says something like if optionField = SL Office.  Then for your action, change the view to View1.  Then create another action rule on the same button, but this time your condition will look something like if optionField = PC Office.  Your action on this rule will change the view to View2.