Try this, it's also seen at theSticky Threads:
This is the things Needed to be Downloaded and Installed to your Computer:
Vidalia Bundle: Updated TOR and Vidalia
ProxyFirewall: Proxy Firewall For Windows The Home Of Computer Privacy Freeware Software And Services
Windows Installer 3.1:
Grand Chase International of your Choice
Things to do:
1.) Install all things needed
2.) Once installed Open first your Grand Chase so you can patch (Cause Opening Grand Chase with the Proxy will result to low speed patching and i require you to this first)
3.) Open ProxyFirewall First and go to the Open Proxies Tab and click Add Proxies.
4.) Once Opened Enter the Ip Address Stated: 127.0.0.1 and Enter: 9051 to the port Bar below the IP Address Bar, Set the settings into SOCK4 and Click Add to List
5.) After that Exit it first (Once you clicked the X button it will appear at the current Programs Tab you must Right-Click at it and Exit it) and Open Vidalia Click on settings and go to the Advance Tab and enter this Again in the Control Port: 127.0.0.1 and 9051 [Not 9050]
5.) Once you have done that Exit Vidalia and Open the Proxyfirewall
6.) first go to Rules Tab and Open Vidalia again once Opened a Message will be Indicated to request weather or not you will assign a proxy on a Program
7.) Once a Message pop-out Click "Allow No Proxies" and Click Ok
9.) After that Open Your Grand Chase Patcher and once a the Message Pops-Out again Select "Allow(No Proxies)" and after the patch is done click Game Start and a Message Pops out again and Assign a Proxy Now(The GameGaurd.des) and Click on the "Click here to Select Proxy Sever" Bar
After that go to Open Proxies the Proceed to SOCKS Proxies and Click the Proxy that i Mentioned while Ago and Click OK and After that A Message pops-out again and assign the proxy again (Main.exe) but still this will get you blocked.
10.) Restart you grand chase but before Opening the Patcher Procede to your Vidalia and Click New Identity and then start. and You will Enjoy Grand Chase International!
Notes: *if your still Blocked just Follow Procedure #10
*If Still for Many Times you're Blocked Close all of the Programs and go to the Start Button All Programs and Go to Vidalia Bundle and Click Tor and Click the Tor inside the File and it will Update your Tor System (This one is Needed to be Opened everyday if you want to play grand chase)
*If Still you cramping try Searching TOR in Google and Update your TOR
Wanna Know your Internet Connection Speed GO to Speed Test to know your download and upload speed ***For People out there who keeps Getting frustrated about the lag If your Internet Connection is above the limit of 2mbps that means that Your Connection is A OK! To Know your Ping for Online Games go to Ping Test
For Persons who are wondering That why Does ProxyFirewall has a Registration on opening the program its because that Proxyfirewall has installed some security measures from now on and The registration is FREE no need to worry.
I would like to thank : Marudashi for making this post