What I find helpful for char sheet generation:
1. SRD. Googling "d20 anything" like "d20 cleric" will usually get you the page you want as the first result - like the Cleric progression, so you can easily see the BAB, saves, spells per day etc. of a 6th level cleric. To pick spells, "d20 cleric spells", and so on.
2. myth-weavers.com char sheets will help some, like automatically adding the ability mods to your skills, once you type in the ability scores and ranks. It doesn't automatically do everything thugh (like it doesn't have the 'classes' built in). There are probably other sites that do even more for you, like if you choose 'cleric 6' they automatically fill in your bab, saves, hit dice, total skill points, etc.
3. There are tons of char sheets on the web. Googling around you could probably find another level 6 cleric out there.
4. IIRC Neira's sheet just said 'prestige cleric', maybe knowing the particular name of that prestige class, and what the Aura of Sexual Ease does, etc. would be nice. I don't need to know since I'm not the DM, but I like to glance over the other PC sheets to think about party strategy.