I wan to upgrade ma computer by increasing ma RAM capacity.Ma processor in inlet Pentium IV and ma mother board is simtronics.its 2ddr.
ma question is
Is it possible to increase ma RAM capacity to 2GB

We need to know the motherboard make and model number in order to tell you if your able or not. The motherboard sets the max amount of ram. The operating system does this also but for xp and vista, the motherboard will max out first.