Here are some problems that I need to get ironed out, and am sure they can with all the intelligent people here:1) Bought a new video card and installed it. Went from the default 64 MB in my Dell 8520 to an ATI Radeon 9600 Pro 256MB. I see absolutely no difference. In fact, my frame rates dropped and the plane studders and "hiccups" even more. I have 256 MB RDRAM, and will have another 512 coming next week. Will that fix it? What settings should i have my video card on and how should i do it?2) The PMDG 737's and the planes that I have tried are extremely hard to control while taxiing. as soon as I try to accelerate, the plane wantes to turn. I have to fight like a mad man to get her straight. I calibrated my CH Pedals and Yoke too. I have FSUIPC as well. What should I do?3) I keep getting these messages where the brakes are that says "differential brakes". I have no idea what that means. Anyone know what it is and how to stop it?4) Every time I load my fuel, the FMC gives me an Insufficient Fuel message. I have plenty of fuel on board too. I planed it with a 737 fuel planner and also got the messages with the tanks full. Ideas?5) Theses two are easy that should be answered without problem. How can I change the altimeter? I cant find it anywhere! And I can't hear the markers on approach. Please help me out!Brad

Ok BradHere we go: ;-)1) You now have as much video RAM as general RAM. That would tell you something? ;-) When I run the NG in FS9 it eats approx 400Mb of RAM. Needless to say you need to have at least that amount to avoid stuttering because of disk access. When it comes to frame rates. Rename your fs9.cfg and start from scratch and see if that makes a difference? Not too familiar with the Dell 8250, what CPU has it? FS is known to be more CPU intensive than GPU intensive. Some hints to get you going.2) Have you set all your axises right. And first and foremost have you assigned brake AXISES to your pedals or did you assign the brake buttons? 3) Differential braking means you break on one main gear but not the other. Very useful when taxying a tail dragger. But not recommended when you have a steerable nose gear. ;-)4) This needs some more information to be solved. Maybe the route your planning on flying, or at least the length of it. ANd of course your load.5) The altimeter is changed from the EFIS control panel. It's right to the left (no pun intended) of the MCP. To the top right you have a knob marked ALT or something like that. That's where you change your QNH or ALT. You can of course also change it on your back up altimeter.Regarding the markers. Do a search on this forum for Tim Metzinger and/or marker. He has done a tutorial that explains this. THere are also a number of posts that has been discussing this issue.Hope it helps, otherwise, holler (or do a search, ;-)TGIF,