Crawling www.glassdoor.com for Salary and Company Ratings Data

I want to run a regression on average salary vs. company ratings for all positions on www.glassdoor.com. I need a program that can crawl [login to view URL] for this data and can store it in Excel for easy manipulation. Ideally, the file should have columns for company name, job title, average salary, and average company ratings. Average salary is available by company name and job title on [login to view URL], but average company ratings is not available. Average company ratings will need to be calculated based on matching job titles since it is only available by individual employee on www.glassdoor.com.