Problem calling a stored procedure updating database

I am new to calling stored procedure using jdbc. If you know both Java JDBC and stored procedure,  please help.

The following  is the code in a JSP program I use to call a stored procedure  which resides in MS SQL 2000

.............
CallableStatement cs = con.prepareCall("{call sp_update_eft_thresholds '750000000926140US','Test User100','100.00','10','200.00','2','300.00','3','400.00','4'}");

rs = cs.executeUpdate()
..................................

I also tried  :

.................
sp="sp_update_eft_thresholds '750000000926140US','Test User100','100.00','10','200.00','2','300.00','3','400.00','4'";

rs = stm.executeUpdate(sp);
...............................

This is the error I got:

C:\Tomcat5.0\work\Catalina\localhost\acm\org\apache\jsp\EditThreshold_jsp.java:652: incompatible types
found   : int
required: java.sql.ResultSet
                         rs = cs.executeUpdate();         
                                                      ^
1 error



      net.sf.acegisecurity.intercept.web.SecurityEnforcementFilter.doFilter(SecurityEnforcementFilter.java:207)
      com.actimize.infrastructure.authentication.ACMSecurityEnforcementFilter.doFilter(ACMSecurityEnforcementFilter.java:67)
      net.sf.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:105)
      net.sf.acegisecurity.ui.AbstractIntegrationFilter.doFilter(AbstractIntegrationFilter.java:170)
      net.sf.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:368)
      net.sf.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:105)


How do I make the type compatible?  

This is urgent, please help!!!