No idea - Lik-Sang have removed all their chips. A quick Google search would do it.
However, you should be aware that there may be laws against it (there are EU countries, which of course doesn't include Russia), it requires opening up your Xbox and it will prevent you from using Xbox Live (assuming you use UK games).
By far the easiest thing to do is to import US games, which is more expensive but will allow you to use Xbox Live. Or, assuming you have the cash, buy a PAL Xbox and use both.
[Edited on 5/26/2004 11:48:50 AM]