Looking for 3COM 3C905-TX Drivers

I am also running Win98SE on a 750 MHz Pentium III with 768 MB of memory and 160 GB ATA 100 hard drives. Unfortunately, the BIOS supports hard drives only up to 131 GB, but since the original hard drives were more expensive and were only 40 GB, I was really very pleased. It also has both 3.5" and 5 1/4" floppy drivers, an Adaptec AHA2940AU host adapter and several DVD and CD drives. One of the really KEY aspects of the hardware is a video card which supports FULL SCREEN mode at 80 columns and 132 columns at many different lines including BOTH 24 lines and 50 lines for 80 columns PLUS 24 lines and 44 lines for 132 columns. The primary program which uses this hardware is the PDP-11 emulator, Ersatz-11, which is probably used 90% of the time and I run normal Netscape 7.2 for e-mail the other 10% of the time. This system is more than 12 years old. All of the original 40 GB hard drivers have been replaced along with the power supply. Indeed, even the replacement power supply is inadequate and I have managed to continue by using a separate power supply just for the hard disk drives which I presume sufficiently reduces the load for the power supply for the motherboard and floppies. Since I am a real Windows dummy, I hesitate to upgrade to a current I7 CPU with SATA hard drives. Is there any reasonable possibility of using an I7 CPU with Win98SE? Are there still I7 motherboards which support at least one floppy at a time - either 3.5" or 5 1/4" floppies? Are there any Video cards available which still support FULL SCREEN mode at 132 columns? Mainly, I would stay with the 12 year old system for another 25 years if I had reliable spare parts and Netscape 7.2 would still continue to support e-mail with newsgroups that are still a small but vital link to other activity that I find interesting. Are there used hardware parts still available for a Pentium III system? I realize that there are no guarantees, but where would I find sources for such hardware? Note that if I stopped running Ersatz-11 in FULL SCREEN mode, then I could easily switch to a different system. In that respect, I probably have accumulated over 100,000 e-mails and posts from newsgroups (mostly the latter, of course). Is is possible to transfer the e-mails and posts to Microsoft junk or is there a better e-mail application like Thunderbird? Jerome Fine