javabear is right, the open function is for cdr files. Import using a filter is for other file types. EPS filter will only show the preview but will print correctly to a Postscript printer/device, to any other printer you will only get the low resolution preview/grey box or nothing at all. PS Interpreted filter normally will give you the curves etc for editing, this is not a good test as the file has been (as the filter suggests) been interpreted and thing such as fades may not be true. Obviously this is not helping thephinx but should clarify things hopefully for others.
Thephinx: if you have full Acrobat, distill your eps, in Acrobat do a save as EPS in Acrobat with the resultant pdf and import that into Draw, or print your eps preview from Draw to a postscript printer and see it it prints ok then set any postscript printer to file, print to that with a ps extension and import that into Draw with interpreted filter. No guarantees but things to try.