Worldpay change causing problems with Joomla / Virtuemart after 30th May

[htangye]

Worldpay, which I successfully use at the moment have sent me and all of its customers a 'READ THIS LETTER' stating they are updating their security and... As part of this investment, we are upgrading our platform and moving it to our new data centre and will therefore be changing some of the IP addresses from which we send updates.

helpful Worldpay technical man stated that my cart has not upgraded and therefore will not work after the 30th May so no transactions will go through.  I use Joomla but Virtuemart is my shopping cart.  Is it Virtuemart which is the problem, or Joomla?  I have an older version of Joomla 2.0.10 as I didn't want to fix something which wasn't broken.  Any ideas what I do.  If I upgrade, it usually causes more problems and may not solve my issue!

Many thanks... Worldpay customers who use Joomla and virtuemart HELP!!!

Harry

[htangye]

My question is... how do I change the address?  What do I do?!