Need computer help please :(

[Hardy]

Ok, here is the deal, i will try and explain it as best as I can.

We kept on getting ads popping up, ad-aware would not get rid of em. They would pop up and have about 20 popped up by time we got up in the morning. So we decided to do a fresh install. I did not reformat yet and all of a sudden it says it can't read a system file when I restart. But that was ok, I was going to reformat anyway. I go ahead with the format, install Windows '98. But whats this? It says there is no partition?? I go in the boot disk, type in "fdisk" and set up another partition, telling it to do the max space. It says my max space is, WHAT?, 4gigs??? I have a 20gig hard drive! After I set up the partition for drive c: (was my first time, had help over the phone with my uncle who is now unavailable). I go back to dos-prompt, type in D: and it finds a drive. I then type in "dir", there is a whole bunch of stuff, not including windows. I take out all of my CDs and floppy drive just in case, I do it again, they are still there! I type "format d:", did not work, says it can't be formated.

I go ahead and install windows 98, been working ok, but getting lots of blue screen errors and illegal operations, its not to bad, happens about once every 2 days. This is where I am today, I have a 4gig hard drive. I have over 20 games, how am I supposed to play them on a 4gig hard drive plus work on a project for a game that takes up 1.5gigs. Help please :cry:

Sorry if this post sounds confusing, I am not good at trying to explain stuff. I just want drive D: gone, and drive c: with 20gig. And YES, I can reformat, I have nothing on this computer atm.

Thanks!