I've got 6 Scotch Bonnet seedlings that I grew from 4 year old seeds that I saved, 100% germination rate.
To start them off I place a square of kitchen towel in a Tupperware box, Chinese takeaway container, and dampen it. Place the seeds inside and seal the lid. Label it with a CD marker. Place the container next to a radiator or in a warm airing cupboard and wait for the seeds to start germinating. Mine germinated in 10 days.
Once the root shoot is about 2-3mm long place the seeds, root down on their edge, into damp compost modules. I use root trainers. Keep these warm too & as soon as a leaf shows get them good light. I place mine on a south facing window sill with a tin foil reflector behind them to bounce the light back on them, keeps them growing straight & they don't grow lanky or bend to the window.
Might try some other chilli seeds for something different.