Help with cfif and cfqueryparam

[JohnShell]

I do not know how to accomplish what I want to do. Have SQL Insert statement with cfqueryparam.
Have form that users can add begin date | end date | type of hrs | number of hrs
The type of hrs is a list with 4 selections. If user selects "Rel Comp" then they are required to complete additional begin and end dates in RCbeginDate and RCendDate fields.
Database has following date fields: startdate | enddate | RCbeginDate | RCendDate. If "Rel Comp" not selected then db fields RCbeginDate and RCendDate are null.
If user has two or more entries - one not "Rel Comp" and the other is, then user is prompted to enter dates for RCbeginDate and RCendDate. Those dates post to the db for the row that is not "Rel Comp" and it should not.
It seems an if (cfif) statement should stop that but how?

<cfloop from="1" to="4" index="i" step="1">
	<cfif IsDate(evaluate("Form.StartDate" & i))>
<cfquery name="qInsertRequest" datasource="RAWH">
Insert into RAWH 
       (EmpPIN,
	Empname,
    	dateRequested,
	startdate,
       	stopdate,
       	TypeHrs, (option list showing Comp Time|Credit Hrs|OT|Rel Comp) 
	NoOfHours,
             projects,
             justification,
             RCbeginDate,
	RCendDate,
             RCLvSlip,
             reqDecision,
             denialReason)
VALUES (
     <cfqueryparam cfsqltype="cf_sql_varchar" value="#Form.EmpPIN#" null="#IIF(Len(Trim(Form.EmpPIN)), DE('no'), DE('yes'))#" />,

     <cfqueryparam cfsqltype="cf_sql_varchar" value="#Form.EmpName#" null="#IIF(Len(Trim(Form.EmpName)), DE('no'), DE('yes'))#" />,	 
       
       getdate(),
       
     <cfqueryparam cfsqltype="cf_sql_timestamp" value="#Evaluate("Form.startdate" & i)#" />,
	  
     <cfqueryparam cfsqltype="cf_sql_timestamp" value="#Evaluate("Form.stopdate" & i)#" />,

     <cfqueryparam cfsqltype="cf_sql_varchar" value="#Evaluate("Form.TypeHrs" & i)#" />,  (option list which should have if statement)		
     <cfqueryparam cfsqltype="cf_sql_decimal" scale="2" value="#Evaluate("Form.NoOfHours" & i)#" />,
              
     <cfqueryparam cfsqltype="cf_sql_varchar" value="#Form.projects#" null="#IIF(Len(Trim(Form.projects)), DE('no'), DE('yes'))#" />,     
          
     <cfqueryparam cfsqltype="cf_sql_varchar" value="#Form.justification#" null="#IIF(Len(Trim(Form.justification)), DE('no'), DE('yes'))#" />,    
       
     <cfqueryparam cfsqltype="cf_sql_timestamp" value="#Form.RCbeginDate#" null="#IIF(Len(Trim(Form.RCbeginDate)), DE('no'), DE('yes'))#" />,    
       
     <cfqueryparam cfsqltype="cf_sql_timestamp" value="#Form.RCendDate#" null="#IIF(Len(Trim(Form.RCendDate)), DE('no'), DE('yes'))#" />,       
       
     <cfqueryparam cfsqltype="cf_sql_char" value="#Form.RCLvSlip#" null="#IIF(Len(Trim(Form.RCLvSlip)), DE('no'), DE('yes'))#" />,
       
        null, 
        null)
         
      </cfquery>
	</cfif>
</cfloop>

Would appreciate help with the if statement and where and how to place it.

John