Okay.. im making the best out of my old 600 Mhz rig and getting old DOS games such as X con and along with some slightly newer games liek star craft and Caesar III, My question is what is the ammount of disk space that I should keep open to keep things running smoothly. I currently have a 10 GB hard drive and im down to 5 GBs, Im running Windows 98 SE as well and I have 96 MBs of ram. ( might be 128 soon. ) I was thinking that if i kept 1 GB open that should be enough to keep things from dying on me?

It really depends on what you programs you use. For example, creating DVDs can use several GBs in the c:\windows\temp folder.

in the modern age HD space isn't so important unless your'e storing a lot of files or you are doing some heavy operations (although i must admit that 1 GB is a very little) but as long as you have a nice amount of RAM HD space shouldn't be a problem, but don't remember to clean your recycling bin. but if you are burning CD's then you would need a nice amount of free space. also you can disable options like system restore, paging file, and hibernation - that would give back a nice amount of space