OK, I'll admit that I was a bit too harsh. Still, proper grammar is good for communicating with people.
That said, the best thing you can do to make that machine faster is to get rid of it. That machine has, what, a 2.2 GHz Pentium 4, or so? And it's got Intel Extreme Graphics, IIRC, which is downright terrible for performance. I had one when it was new, and it sucked then, they suck even more today. An old Latitude D610 or ThinkPad T43 wouldn't be too expensive.
However, if you insist on keeping it, the best upgrade you can do is upgrade the RAM. Looks like you can put a max of 1 gig in there, using two 512 meg DDR266 modules. That should help a lot.
You might be able to upgrade the processor to something faster, but anything that's faster will also run hotter, and I've worked with Inspiron 1150s with faster CPUs that had major heat issues. I'd leave the CPU alone.