[TippeX]

if you can patch the call to the proc, then you can also patch the proc it calls, which is a LOT better.. esp. if the proc is indirectly xreffed later on, then your work is in vain.. patch the proc, then its more probable it will work...
and sometimes its weird, patching mov eax,1 does not work, however patching xor eax,eax.. inc eax does (most likely due to flags), so thats also worth paying attention to...