Looping Through A Recordset In A SP

What I have to do is loop through a table with about 900 records, do computations on each record and update a database, can someone help me out.

here is the code that I am using right now on another site with coldfusion but i want to convert it all to a stored proc for speed reasons.

<!--- Query the Stores Table --->
<cfquery name="Zip2" datasource="#application.data#" username="#application.username#" password="#application.password#">
exec Stores_GetStoreZipInfo
</cfquery>

<!--- Loop through the STORE table --->
<cfloop query="zip2">
<cfset Lat1 = #zip1.lat#>
<cfset Lg1 = #zip1.long#>
<cfset Lat2 = #zip2.lat#>
<cfset Lg2 = #zip2.long#>

<!--- Do the actual distance calculation between the user's zipcode each store's zipcode --->

<cfset DistLat = 69.1 * (Lat2-Lat1)>
<cfset DistLong = 69.1 * (Lg2-Lg1) * #cos(Lat1 / 57.3)#>
<cfset Dist = ((#abs(DistLat)# * 2) + (#abs(DistLong)# * 2)) * 0.5>

<!--- Update the DISTANCE field on STORE table --->
<cfquery name="UpdateZips" datasource="#application.data#" username="#application.username#" password="#application.password#">
exec Stores_UpdateZipSeachInfo '#Dist#', '#zip2.zipcode#'
</cfquery>
</cfloop>