Increasing framerate

[ErrorMacro11]

im having problems with frame rate and i would like to increase the framerate. how would it be possible to do this
specs are
Microsoft Windows XP Professional
Version 2002
Service Pack 3
Intel(R)
Pentium(R) 4 CPU 2.40GHz
2.39 GHz. 0.99 GB of RAM

[error46146]

Try these settings

Display mode: window
Width: 640, Height: 480
Interpolation-
  Mode: Nearest neighbor (mipmapping)
  Transparency: Smooth
Distance Effects-
  Viewing distance: 225m
  Motion blur: Low or None
Sound-
  Effective Range: Low
  Number of allowed sounds: 16

[HijauKuda]

Try OpenBVE\Settings\Options.cfg:
VSync = False
LoadInAdvance = True

What graphic card?

[ErrorMacro11]

Intel(R) Extreme Graphics Card

[ErrorMacro11]

Intel(R) 82845G/GL/GE/PE/GV Graphics Controller

[SubwayTrainOperator5]

You have an integrated graphics card. There is no such thing as an integrated graphics card that is reasonable for gaming, you would need a REAL graphics card (ATI/Nvidia, etc) if you want to play OpenBVE (Or any other game) without lag.

[YankeesPwnMets]

Not much you can do here other then shutting unnecessary programs down. The computer is too old to even bother upgrading and your system is weak even for a home machine.

Also, that "extreme" name is all this a marketing thing. Careless consumers just see the word "extreme" and think its good. Unless the computer says "Core i7 Extreme" everything else is a phony.

[Fox-179]

You probably need more RAM .99 or 1GB is nothing.
Your computers GHz speed is good but low RAM.
http://www.crucial.com/
Do a system scanner to see if your computer can hold more RAM if it can they'll be suggestion for upgrades and their prices are good.