Looking up data on the internet

I'm looking for a formula to lookup housing data on the internet. I get a list of MLS numbers every morning and want to be able to copy and paste it into Excel and then open the har.com website with the MLS number. That way I can lookup the information on HAR. Also HAR gives me the address to the house. I want to be able to go to HCAD.org and lookup the property taxes. It would be tricky on the property tax part since the Address information is in two parts. The first part is the address number while the second part is the Address. Even if there is a way to make it semi automatic that would be great since sometimes it takes me 2-3 hours a day cutting and pasting data.

Clark