any ideas how to do this? I want to make a series of .jpeg images into a single .pdf file.

Any ideas? Software (freeware)?

How do you mean exactly? Like panels? In that case you can use Photoshop (or the gimp i think it's called? Free program which is similar to photoshop). You can just open a new page, arrange your jpegs as you like then save it as pdf. Ideally though, you'd want to save it as eps and then export it to acrobat distiller which converts the image to proper pdf.

Same can be done using freehand and acrobat distiller. Just open a page in freehand (or adobe illustrator) and arrange the jpegs, save as editable eps, then open acrobat distiller and load the eps file and convert them to pdf.

Just a quick update: alternatively you could save your jpegs as pdf's in photoshop, then use Acrobat Distiller and select 'create PDF from multiple files' and just import your newly saved PDF files. Then just arrange them as you need. Sometimes Acrobat allows you to create PDF's directly from jpegs (in which case you follow the same procedure, but you don't have to save them as PDF's in Photoshop first).