Well, when you talk about the mini pocket diary and it contents to transfer file from pc to pocket version and vice verse,, it is not easy to suggest the remedy unless I know exactly what is the brand and version of application is used in your pocket electronic diary. Coz., if it is windows supported pocket version, it can be simply sychronised to your laptop and it get automatically updated or you can inter-change the data you wish each other.i.e. only applicable for pocket-pc diaries. If you are using some other diaries such as Sharp, Atlas and these categories, there is special cable and software comes with it to enable to transfer the contents you wanted that supporting the unit only.
I strongly recommend you to use iphone, or iphod to keep your updated diaries more organized and accessed in a convenient multifunctinal lifestyle entertaining electronic method that makes life more easy and awesome nowadays. Best of luck.