Well your processor is plenty fast enough and if you have a 1024MB RAM that should be enough for now as well (though there are one or two games that can make use of a little more).
I would concentrate just on upgrading your graphics card, considering you are using Intel integrated graphics the difference should be like night and day!
Don't think it's necessary to go mad on the power supply. The only other thing I'd look at when you have the case open is cooling. I'f there aren't any cooling fans in there at the moment and your case has room for them, I'd stick one on the back pulling hot air out and if there is room, one on the front to pull fresh air in. Hey, if you are in Spain and without air conditioning, things can get quite toasty there!
Generally your system should be fairly speedy in general use, if it feels slow it may be worth looking to see if uneeded things are running in the background etc. I trust you are using an antivirus and that you scan once in a while for any spyware, there are free tools for those e.g. AVG and Adaware.
Hope this helps a little. Sure you'll be enjoying some decent gaming as soon as you get a proper graphics card in there.
Karl
I would concentrate just on upgrading your graphics card, considering you are using Intel integrated graphics the difference should be like night and day!
Don't think it's necessary to go mad on the power supply. The only other thing I'd look at when you have the case open is cooling. I'f there aren't any cooling fans in there at the moment and your case has room for them, I'd stick one on the back pulling hot air out and if there is room, one on the front to pull fresh air in. Hey, if you are in Spain and without air conditioning, things can get quite toasty there!
Generally your system should be fairly speedy in general use, if it feels slow it may be worth looking to see if uneeded things are running in the background etc. I trust you are using an antivirus and that you scan once in a while for any spyware, there are free tools for those e.g. AVG and Adaware.
Hope this helps a little. Sure you'll be enjoying some decent gaming as soon as you get a proper graphics card in there.
Karl