My first PC I built was around late 98 or 99 I think.
it was as follows
Generic "Super" Case
included deer "300w" power supply
Gainward 440BX based motherboard (adjusted FSB in the bios no more jumpers yes!)
Slot 1 Celeron 333A @ 525
Crucial 128mb PC 100 cas 2 ram (2x 64 mb dimms)
Matrox G200 8mb (AGP)
Orchid 3d Vodoo 2 12mb (PCI)
Intel Pro 100 - S Nic
Plexor 24x Cd-rw
NEC 12x DVD rom
20GB Maxtor 7200rpm HDD
8.4 GB WD 7200rpm HDD
Teac 1.44mb floppy
Creative SB 16 ISA w/ Roland daughtercard (for midi in wingcomander

)
MS Natural keyboard & Ms trackball
17" MAG Monitor (based on a sony trinitron tube)
edit: forgot the 56k viking LT modem
Thats all I recall some of the parts were carry over from my old PC (like the 8.4 gig HDD , the soundcard and the floppy)
I put this together as my Pentium 150 just just not cutting it anymore and I had finally saved up enough to buy the parts.