PC sheets go here.
Rules for this game:
Hit Points: Max 1st Level, average after.
Stats: 28 point buy
There are some skill/feat/profession differences twixt d20 modern/past.
Here are some highlights for the Feats:
Advanced Firearms Proficiency, Aircraft Operation, Burst Fire, Double Tap, Drive-by Attack, Force Stop, Gearhead, Medical Expert, Strafe, Surgery, and Vehicle Dodge aren't available.
Personal Firearms Proficiency covers virtually all handheld firearms. Cannons require exotic weapon proficiency.
Archaic weapons covers all bows
Simple weapons cover crossbows
Simple or Archaic will cover almost all melee weapons unless truly exotic
a few other feats have some differences
http://www.12tomidnight.com/d20modernsrd/Home.php this should help some
Starting Occupations: Dilletante, Emergency Services, and Technician are not available, some others have minor differences.
Skills: Computer Use, Investigate, Knowledge (Behavioral Sciences, Technology), and Pilot are unavailable, some others have changes.