Go to www.thirdgen.org for starters. There is a forum called do it yourself proms that talks about programming in great detail. There isn't a simple answer to your question though. The best I can offer is find out what the recommend bin file is to start with. Chances are you already have it. If your motor is basically stock (cam, displacement etc.) you probably won't have much to do. The trouble comes when you stroke a stock motor, or add a radical cam etc. You'll end up logging lots of data and making adjustments over and over and over again. My experience is mostly with 86 and 87 model bins though I expect 95 is similar.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
ZooDad, there are a couple of options that you have. You can either do it yourself (with a laptop) or send it (the PCM) to a programmer. If you want to do it yourself with a laptop, there are a couple of programs that will alow you to do it or you can get a "program" and download it with cables from akm cables.
If you want to ship your PCM out for a "reprogram" then there are several companies that could help you (TPIS, S&P, ect). I would recommend you giving Bryan at www.pcmforless.com a call. He is well respected in the LT1 world. I got my programming from him. I called him and discussed what changes I needed. Bryan's website can give you an idea of the services he has to offer. Make sure you have an 8051 (last 4 numbers on PCM ID) PCM, these are the ones that are used in the OBD-1's. His charges are ALOT cheaper than most other companies ($99 compared to $300+). I have not had any problems with my set up.
What ever you decide do some researching first. Two good sites are at www.cz28.com and www.fbody.com Pre 94 computers are known as ECM and have a "changeable" chip. Post 94 computers are known as PCM and have to be "flashed" to change their data. Let me know if you have any other questions. Hope this helps.
1968 Camaro SS coupe, Lemans Blue/medium blue interior
LS3/T56 Ridetech Suspension