Plink can also be used with WinCVS. Firstly, arrange for Plink to be able to connect to a remote host without a password. section 5.5 has instructions on this.
In WinCVS, bring up the Preferences dialogue box from the Admin menu, and switch to the Ports tab. Tick the box there labelled Check for an alternate rsh name and in the text entry field to the right enter the full path to plink.exe. Select OK on the Preferences dialogue box.
Next, select Command Line from the WinCVS Admin menu, and type a CVS command as in section 5.5, for example:
cvs -d :ext:user@hostname:/path/to/repository co module
Select the folder you want to check out to with the Change Folder button, and click OK to check out your module. Once you've got modules checked out, WinCVS will happily invoke plink from the GUI for CVS operations.