The feat Practiced Spellcaster (Complete Arcane) has a prerequisite of four skill ranks in Spellcraft.
Can I take this feat on the first level if I use my skill points to get Spellcraft to four ranks? Is there an answer from an official source?
The d20 SRD has this to say about feat prerequisites:
It's perfectly okay to use your first-level skill points to qualify you for this feat.