I tried to follow as "How to Connct?" page says. I downloded & installed(and updated somehow); "kRO Ragnarok 06-18-2009 (0618)", "kRO Ragnarok Renewal 06-18-2009 (0618)", and "kRO Sakray 03-25-2009 (0325)".
Downloaded "07-15-2009.play.ratemyserver.net.client" and I did "sclientinfo.xml " thing in "data" folder(not sure i did correctly but i did "find the last </connection> tag then paste the following AFTER the tag"). Everything was in "RO" folder, D-click on "rmsserver-2009-06-17a" -->Gravity Error.

data.grf to sdata.grf? I have them both! here is what the error says:
Module Name: C:\Program Files\Gravity\RO\rmsserver-2009-06-17a.exe
Time Stamp: 0x4a37d16e - Tue Jun 16 11:07:58 2009
Exception Type: 0xc0000005
0x0043e14f rmsserver-2009-06-17a.exe
0x006c109f rmsserver-2009-06-17a.exe
0x006d5d5c rmsserver-2009-06-17a.exe
0x7c817077 kernel32.dll
eax: 0x00000000 ebx: 0x0079caf0
ecx: 0xffffffff edx: 0x0012faff
esi: 0x00000000 edi: 0x00000000
ebp: 0x0012fc0c esp: 0x0012fa04
stack 0012fa04 - 0012fe04
0012FA04 : 30 FF 12 00 24 C1 75 00 00 00 00 00 20 08 00 00
0012FA14 : 9E 61 84 B4 1F 9A CA 01 9E 61 84 B4 1F 9A CA 01
0012FA24 : 00 FD 3D D0 C8 08 C2 01 00 00 00 00 BA 24 00 00
0012FA34 : 28 02 95 7C 88 89 E8 05 BD BA C5 B2 C1 A6 C0 DB
0012FA44 : B8 C5 B4 BA BE 81 45 74 78 74 00 00 00 00 00 00
0012FA54 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0012FA64 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0012FA74 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0012FA84 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0012FA94 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0012FAA4 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0012FAB4 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0012FAC4 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0012FAD4 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0012FAE4 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0012FAF4 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Launch Info
0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000
Job : Novice