Randomizing a "FLOAT" (newb)

BOOL CEngine::AimAtRandom(CPlayer* pTarget, BOOL bRandomShot)
{
	CPlayer* LocalPlayer = PlayerList->GetLocalPlayer();
	Vec3f vAimMod = Vec3f(0.0f, 0.0f, 0.0f);
	int randmin = 0.2f; //minimum of the randomization
	int randmax = 0.7f; //maximum of the randomization

	if(LocalPlayer != NULL) {
		if(pTarget->IsCrouching) {
			vAimMod.z += 0.4f;
		}

		if(!bRandomShot) {
			if(pTarget->IsCrouching) {
				vAimMod.z += 0.2f;
			}
			else {
				vAimMod.z += 0.5f;
			}
		}

		Vec3f vNewAim = ((pTarget->Camera + vAimMod) - LocalPlayer->Camera);
		vNewAim.ModifyDirection(LocalPlayer->VForward, LocalPlayer->VUp, LocalPlayer->VRight);

		return TRUE;
	}

	return FALSE;
}