figuare9

I've googled it and tried to get it working with Tekkit, but no luck. I just get a white screen. I tried doing it to the minecraft.jar and also to the modpack.jar. Any help would be very appreciated. Maybe even a link to a topic about this already. I wasn't able to find anything. I'm trying to get optifine and some good looking shaders working with tekkit. Minecraft Version 1.5.2. Thank you very much.