House Rules for Magic/Psionics Interaction:

    Detect magic detects the presence of psionic auras, but not the strength or discipline
    Detect psionics detects the presence of magic auras, but not the strength or school
    Dispel magic checks that target psionics are cast at a -4 penalty
    Dispel psionics checks that target magic are manifested at a -4 penalty
    Antimagic field has a chance to hinder psionics, and null psionics field has a chance to suppress magic; every 1d4 rounds, an opposing effect has a 50% chance to be hindered
    Creatures with resistance to mind-affecting spells and effects gain resistance to psionic equivalents, and vice-versa
    Creatures with spell resistance gain power resistance equal to their spell resistance minus five
    Creatures with power resistance gain spell resistance equal to their power resistance minus five
    The following skills can be used interchangeably for skill checks, but at a -5 penalty to emulate the opposing skill; ranks in these skills never “stack” and are not interchangeable for other purposes (such as meeting prerequisites for a prestige class):
        Spellcraft and Psicraft
        Use Magic Device and Use Psionic Device
        Knowledge (arcana) and Knowledge (psionics)
    Counterspells and countersongs do not affect powers
    All other equivalent spells and powers are interchangeable; for example, identify and psionic identify can each detect magic or psionic properties