No Available Memory

Now my sim after working the 1st time, is saying " This computer has run out of available memory. Flight simulator will now close. Etc... "
then something about not having enough room on the hard drive, I have 50 gbs left on that drive, i also have 2 gbs of ram and Fs2004 doesnt even come close to using all that
then something about not having enough room on the hard drive, I have 50 gbs left on that drive, i also have 2 gbs of ram and Fs2004 doesnt even come close to using all that