Everything looks good except this
Note: Under Windows 9x, if you have RWIN set to any other value, and the Analyzer reports 65535 you might need to install the MS Vtcp386 fix.
For optimum performance, consider changing RWIN to a multiple of MSS.
Other values for RWIN that might work well with your current MTU/MSS:
Is 65535 what you have your RWIN set at?? You might want to try the fix it suggests. You can also try setting your RWIN to 64240 that number seems to work well for a lot of people.