This version requires no installation at all, it takes awhile to load but it WILL work.
Instructions:
When registering the product, pick offline or the other option other than going online (internet) to register it, I forgot what option it is but there are only 2 options.
Serial:
1R8-52GH-93FW-WDGJ
Activation Key:
GMRPL9DEK-W0TDPHTEY-RQLSSMM5L-7PXJZYQF3-44LWJLDR5-MWN5HQSB4
Download (Same download different links):
http://www.mediafire.com/?2xa9zpq28na7w3i
http://www.mediafire.com/?g1r9otcwmq65xg6
http://www.mirrorcreator.com/files/0JXIQJXU/Sony_Vegas_Pro_10.0a_Build_387_Portable.exe_links
Credits...