The Name should not be a problem, since you have both the names in the Marriage Certificate.Your marriage cerificate should be attested by Ministry of external affairs - India.

Please contact the Ministry of Labor and Social Affairs
- Qatar at Muntazah , Just near the Petrol Station. Get the application form for the visa, get it filled with Signature and Zeal from your Company.

You need to attach your salary certificate from the place you work, Bank Statement from bank , copies of passport etc ...Please check the visa application form for the details.

You can get more details and application form from MOI Site

http://www.moi.gov.qa/site/english/forms/index.html

Also from http://www.gov.qa