You're going to need to post the script.

var expDate = new Date(Values("comp_suppexpdate"));
var sysDate = new Date();

if (expDate < sysDate)
{
Values("comp_supporttype") = 'lapsed';
var intRecordId = CRM.GetContextInfo("Company","Comp_CompanyId");
var recComp = CRM.FindRecord("Company",'Comp_CompanyId='+intRecordId);
recComp.comp_supporttype = 'lapsed';
recComp.SaveChanges();
}

The Values collection is only for data that is submitted from the screen. If you need to reload, then (assuming this is a company summary screen) you could try after the SaveChanges() a call to CRM.Url(200); This might work as it will execute the action code 200 which is the company summary screen, which in effect will reload it.

Actually, that won't do what I thought... Calling CRM.Url(200) will return a string to call the action code for a company summary. If you need to redirect, you will need to create a stub ASP page that contains the standard includes for a CRM ASP page, and then have a Response.Redirect(CRM.Url(200)); in it as its only line of code in the body. This is because you can't (as far as I recall) do a redirect from within the server side scripts. You can from external ASP scripts though.

Actually, that won't do what I thought... Calling CRM.Url(200) will return a string to call the action code for a company summary. If you need to redirect, you will need to create a stub ASP page that contains the standard includes for a CRM ASP page, and then have a Response.Redirect(CRM.Url(200)); in it as its only line of code in the body. This is because you can't (as far as I recall) do a redirect from within the server side scripts. You can from external ASP scripts though.

Thanks for your help. In the short term, I'm think of using ErrorStr to just display a message that the value has been updated. Press F5 to see the change. In the meantime, I'll have a read up on external ASP scripts.