Beware if you want to use cy-GB locale on Windows Server 2003 - you will need to update to Service Pack 2 - as this locale is not present in the original release or service pack 1.
If you cannot upgrade to service pack 2, I found a useful resource on the University of Wales - Bangor - language technology website.
I have repeated the relevant information here for future reference:
1. Create a cy-gb.ldml with the C# code by running the following code on a windows XP SP2 machine (NB this references the following Sample code for getting ELK cultures on other platforms by Michael Kaplan).
1: using System;
2: using System.Globalization;
3:
4: namespace Testing
5: {
6: class Test
7: {
8: [STAThread]
9: static void Main(string[] args) {
10: CultureAndRegionInfoBuilder carib = new CultureAndRegionInfoBuilder("cy-GB", CultureAndRegionModifiers.Replacement);
11: carib.LoadDataFromCultureInfo(new CultureInfo("cy-GB", false));
12: carib.LoadDataFromRegionInfo(new RegionInfo("cy-GB"));
13: carib.Save(@"c:\cy-GB.ldml");
14: }
15: }
16: }
17: }
2. Copy the cy-gb.ldml file to your Windows 2003 (or Windows 2000) machine
3. Open the cy-gb.ldml file in Notepad or any text editor and search for the lines containing :
1: msLocale:textInfoName type="cy-GB"
2: msLocale:sortName type="cy-GB"
and change them to
1: msLocale:textInfoName type="en-GB"
2: msLocale:sortName type="en-GB"
Then register your new ‘custom locale’ by executing the following code on the Windows 2003 box:
1: using System;
2: using System.Globalization;
3:
4: namespace Testing {
5: class Test {
6: [STAThread]
7: static void Main(string[] args) {
8: CultureAndRegionInfoBuilder carib = CultureAndRegionInfoBuilder.CreateFromLdml(@"c:\cy-GB.ldml");
9: carib.Register();
10: }
11: }
12: }
NB - to compile the code you can use the following:
1: csc /r:sysglobl.dll welsh.cs
So should all be okay now!!