Andrew,
depending on your MicroStation Version there are different ways to achieve this.
With MicroStation J you would need a Windows PDF printer, i.e. Adobe Acrobat Standard or higher. Be aware that there are many commercial substitutes, such as Nuance PDF Converter Pro, PDF-XCHANGE Pro, Nitro PDF Professional, Jaws gDoc, etc. and plenty of freeware substitutes, such as PDFCreator.
For a market overview Wikipedia provides a extensive List of PDF Software. http://en.wikipedia.org/wiki/List_of_PDF_software
In MicroStation V8 or higher you can use a native Bentley driver (Bentley has licensed Adobe Acrobat Technology) to produce a PDF. Depending on your MicroStation version the name of this Bentley driver is PDF.plt or PDF.pltcfg.
In the plt or pltcfg file you should make sure that Text in the PDF is searchable. To achieve this, make sure, that in the plt the following command line is active:
CmdName /appname="pdf" /command="SearchableText" /qualifier="on"
HTH
Gunnar
Hi Gunnar
Thanks for your support so far. I'm still having a few problems. I am using Microstation V8 XM and Adobe Acrobat Professional V7. I have amended a .plt file which does make the pdf file editable but it also changes the look of the fonts that are being used'
I have attach two pdf files so you can see the difference, the line wieghts are not a problem as i can change the without any problems but its the fonts i have a problem with. If you have any ideas on this it would be great. if you want the .plt driver to look at just let me know and i will forward it onto you and on that note is there a way of having the same info from a .plt driver on a .pltcfg driver.
Thanks
Andrew