Want to try out MouRO? There are a few methods you can pick from:

• Installer (Medium size, 6.7MB, last update: January 31, 2010):
  This installer contains everything you need to play MouRO except the data.grf (or rdata.grf, both together are over 1GB in size) and the BGM directory (soundtrack, +200MB), which must be copied over from another RO installation. Recommended if you have a RO install with other servers, and you are uncertain you can have both servers installed on the same directory (more info).
• Installer (Small size, 6.3MB, last update: January 31, 2010):
  This installers contains only the MouRO specific files, it is meant to be installed on top of a clean Ragnarok Install (more info). If you don't have RO, you can follow the first part of the installation guide to get it and then install this on top of it.
• Installation Guide :
  The installation guide is an in-depth document that describes the RO/MouRO installation methodology step by step. Recommended if you are not so knowledgeable about how server installations work.
• Quick Installation Guide :
  For those who consider themselves RO veterans, the quick guide is a document explaining how to install MouRO with the minimum possible amount of detail.

If you don't even need a guide, the following is the list of all the available files:

• RateMyServer (to get RO)
• eAthena forums (alternative to get RO)
• Kro Renewal Clients (1MB each, current version: 2010-01-26)
• adata.grf (4.2 MB, last update: January 23, 2010)
• bdata.grf (~1MB, last update: March 2, 2010)
• sclientinfo.xml
• MouAI (Homunculus AI, version 2.0: Jan 23, 2009)

When all else fails, you can always ask for help in the forums.

Once Installed, to register for MouRO: Open Ragnarok Online. On the server login input your desired username followed by "_M or _F" and your password. E.g.: if you want to make an account with male characters with user name "john" and password "smith", you enter "john_M" in the username field "smith" in the password field. This only needs to be done when you first create your account, after this you do not need to use _M/_F.

After creating a character, you may want to go into the Training Grounds, so you can get a comprehensive guide to MouRO while you train your way to second class.