this is the link that works for me
"C:\Program Files\Sierra\Homeworld2\Bin\Release\Homeworld2.exe" -mod Complex55.big
the location of the Homeworld2.exe might be different on ur computer, but if create a new link and simply add -mod Complex55.big outside the "" then it should work.
alsooo... whens the next version out? the previous posts say the weekend just passed..
still lookin foward to it tho