1. If you have multiple versions of Adobe Photoshop installed on a PC, the installation program may find a different version of Photoshop than you like to install for or may not find any Photoshop even if it is surely installed.
In these cases, you need to specify the plug-in folder of your Photoshop manually. Click OK on those message windows and proceed to Select Destination Directory dialog box.
2. Click Browse.

3. Here, you need to specify the plug-in folder of your Photoshop. The plug-in folder of Photoshop varies depending on the version. If you have installed your Photoshop by default, the plug-in folder would be as shown below.
Once you specify the folder, the installation program automatically create a subfolder named "vpceTrial". So, if you specify the plug-in folder of Photoshop CS, Virtual Painter Classic Trial Plug-In version will be installed into
C:\Program Files\Adobe\Photoshop CS\Plug-Ins\vpceTrial\.
Click OK and continue installation with the instruction here.

Photoshop 4.0
C:\Adobe\Photoshop\Plugins\
Photoshop 5.0
C:\Program Files\Adobe\Photoshop 5.0\Plug-Ins\
Photoshop 5.5
C:\Program Files\Adobe\Photoshop 5.5\Plug-Ins\
Photoshop 6.0
C:\Program Files\Adobe\Photoshop 6.0\Plug-Ins\
Photoshop 7.0
C:\Program Files\Adobe\Photoshop 7.0\Plug-Ins\
Photoshop CS
C:\Program Files\Adobe\Photoshop CS\Plug-Ins\
Photoshop CS2
C:\Program Files\Adobe\Adobe Photoshop CS2\Plug-Ins\