edit D:\software\tk8.6b2\win\buildall.vc.bat

line 31 to

call C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\vcvarsall.bat

line 53 to

if "%TCLDIR%" == "" set TCLDIR=..\..\tcl8.6b2

open cmd window

cd to

d:\software\tk8.6b2\win>

then

d:\software\tk8.6b2\win> buildall.vc.bat debug

tk will be made as tk86t.dll, in addition wish86t.exe is generated.