Welcome to SolidWorks forums Rosa.
I'm slight confused as the title says Import from Excel whereas post says import into Excel. So what exactly is the need.
Check the posts under "More like this" on right side of the post and you should be able to find something useful.
You might also find this post helpful for your future reference.
Sorry, I meant import points into an existing model from an Excel file. Got a bit ahead of myself.
Any luck with this?