Problem displaying img with spaces that are saveed vie a script

[pheagey]

I have a script that allows users to upload files and pics along with them. One of the feilds in the form is 'Object_Name', this renames all the files & pics. Now if there are spaces in the feild the images to not show up but the object can still be downloaded even if it contains spaces.
Now the pictures are thumbnails that link to the original pics (also renamed vie object_name) and the links work just fine.
O, and when I check the file system on my server everything contains spaces just like expect.
So what Im asking:
Does anyone know how to get the thumbnail images to showup correctly?

Thanks in advance, sorry I cann't post the script its some 600 lines long...

[jerdo]

Regex the spaces out when they are uploaded.