question about hard drive RPM and monitor resolution, please

My Build

I'm trying to avoid buying a new hard drive cause then I'd need a new copy of windows, and it would throw my price up by about $180. So I have a question - Will using an IDE drive instead of a SATA and it being just a generic drive instead of a good 7200 RPM drive hurt my performance with this computer? That's provided I can hook 2 IDE drives up (HDD and DVD) to one cable and one IDE slot on the mboard.

Second, how bad will 1024 X 768 resolution on a 17" screen be with this build? The monitor I may upgrade to if I can save from buying the HDD and Windows is this -

here

But I can't tell what the max refresh rate is at its max resolution, it's going to have to be 85Hz for me so does anyone know what the refresh rate is?

I know I've asked this question a million times in other posts, I'm almost ready to just spend a few more hundred dollars and save myself (and you guys) the trouble of bothering with it

I've switched hard drives to a new mboard before and it worked. It was years ago when I had an HP computer and bought an Epox motherboard. The HD was set up for that HP computer, I had no windows disc - only system restore discs. It's shaky when you first hook up the new HD to everything and I think one time I had to start over and reformat. But what I always did was let it run through and install the hardware it has to (without asking me what to do), then I restart and install the stuff I need discs for. Some stuff I never actually installed properly, if it wasn't broken and it performed right, I didn't fix it.

But now that you mention it I remember that LCD screens don't have refresh rate, I definitely need one cause CRT flicker destroys my eyes.

I think I'm just gonna say the hell with worrying about the HDD/windows, and the monitor. I'll spend the extra and be good to my eyes and get an lcd screen, and the HD and windows OS depend on whether I can get all this started up when the parts ship.

I think I've worn out my welcome asking about this so many times, but thanks to everyone who helped me. I'll let you know how it goes