to read from data folder, for later clients, a method I use for testing from data folder is to create a bat file
So open note pad and paste the entry below, and then save it. Make sure you save it as all extensions and save it as client.bat or something.
start 2011-03-15aRagexeRE.exe.patched 1sak1 /account:sci.xml
Where 2011-03-15aRagexeRE.exe.patched is the name of the client you are using, and for sci.xml. What I do is copy clientinfo.xml and rename it to sci.xml.
Now you start your client using the bat file.