I recently bought an Acer computer. I know not the best of brands out there, but seemed to have what i thought i needed. It has 250Gb hard drive, 3GB ram. I need to know what i can add to this to speed up my gaming. i am currently studying to be a pilot and use Microsoft Flight Sim X and get what i call "slide showing". It just does not run very smooth and takes awhile to load. I am constantly over controlling as it does not catch up to my movements quick enough. What should i do? If you need more info about my computer please ask.