Question : css conditional statements for different browsers AND different resolutions?

I have a CSS file for general IE and for Firefox. My html includes the if IE statement.
But now I need to deal with all the browser resolutions as well. Elements move to right or left, etc. and break the design on lower resolutions.

I am thinkinking i will have to find a way to have a statement call a different css for every resolution as well as IE and Firefox.

How do I do all the above?
What would be my conditional statement?

Is there perhaps a more consise way to do this than having to call like 12 different style sheets?

TIA for any advice.

Answer : css conditional statements for different browsers AND different resolutions?

One more thing. Add the resultset number (1,2,...) to each cfprocresult variable

    <cfstoredproc procedure="pr_get_LoggedUser_Info" datasource="#Application.CDP_DSN#">
        <cfprocparam type="In" cfsqltype="CF_SQL_INTEGER" value="#rsCF_Client_ID.CID#" null="No">
        <cfprocresult name="rsCF_Client" resultset="1">
      <cfprocresult name="rsCF_Client2" resultset="2">
    </cfstoredproc>