Welcome to the forum
You have to open the file in SW and check the geometry.
It's all depends on the geometry you get after translation
Someone can help you if you post the file here, if possible
As John said, it all depends. If the geometry is fairly "easy", then you might be able to use FeatureWorks to generate an editable SolidWorks model. Then you can just change the required dimensions. (I don't think FeatureWorks is available in the base model SolidWorks, only in Professional or Premium.) Another possibility is to use the Move Face command to add thickness or move a feature.