If you are unsure as to whether you should purchase a Linux or a Windows hosting package, the information below should help you decide.
If you are using PHP or MySQL, you would require a Linux hosting package.
If you are using ASP, ASP.NET or MSSQL you would require a Windows hosting package.
If you are still uncertain, this information on recommended operating systems for applications and site types should help:
If you are using Joomla/Virtuemart, Magenta, Actinic, Wordpress web hosting, OSCommerce or a website using PHP to interact with MySQL, the recommended operating system for you would be Linux.
If you are using an ASP.NET application or if your website is using ASP to interact with MSSQL, the recommended operating system for you would be Windows.
Please note: The Trust level is set to medium for all Windows packages. This means that if you are looking to develop your own ASP.NET applications you must ensure that it conforms to a medium trust environment.
For an in depth comparison of the hosting packages offered by 123-reg, please visit http://www.123-reg.co.uk/web-hosting/comparisonpage.shtml.