Here is a small plugin for OllyDbg 1.10 which allows you to replace the old disassemble routine used in OllyDbg by a more recent one (BeaEngine 2.3) . You just have to press Ctrl+W to change the disassemble engine. If you want to use BeaEngine only on selected lines, just press Ctrl+X. This plugin make OllyDbg able to debug last instructions as MMX, FPU, SSE, SSE2, SSE3, SSSE3 and VMX.