that link requires a user to be logged in, meaning some sort of registration is required.
If you have an account, you can check to see if they allow their package to be redistributed, they must allow this for it to be included in the repository.
Its usually a good idea to request for packages first and then install them from the repository because that will mean they are checked and are known to work with pclinuxos and they will became available to the whole pclinuxos community.
Since you already have libcurl.so4 installed, you can install the package without checking for dependencies with this command
rpm -ivh --nodeps /home/fahrije/Desktop/wakoopa-2.0-2.i386.rpm
You should know that you are installing a package ignoring a dependency and this may work now but may cause serious problems down the line and the problem will be difficult to trouble shoot and support will probably not be provided. This is a very serious thing you are doing. I can not stress this point enough. Continue at your own risk and have an installation disk close by, you may need it