Multiple Databases

I'm trying to pull information from two different databases, use it, and then put it back into a database. The program I am writing is one which will keep track of exempt employees' absences. At the end of the year, employees get to rollover the sick days that they do not use. Herein lies the problem. The information on how many sick days an employee is in an AD download on one server. The information on how many days that employee has taken this year is on another. I need to take that information do a little math, and then add those days into a different table on the same server that the absences came off of to keep track of their "sick bank".
I would like to just Loop the information, but I cannot put recordsets inside recordsets and I cannot create a view from two separate servers, so I am at a stop sign. Can I just take all of the users and the amout of sick days they have and put them in a text file and then pull off of the text file? I'm not quit sure how to do this.