It does help to know how you're trying to do it and why the files need recovering from what after what. DON'T eff around with any shareware/snareware, you don't need to blow a lot of cash.
Some general remarks: First of all, if you are ever trying to recover deleted files on a drive that is still healthy and running an operating system, do NOT use that drive to save the recovered files to. In fact, don't do anything, including booting up and ransacking the internet for recovery tools and installing stuff. This is guaranteed to overwrite and destroy some recoverable files. The best way to handle this situation is either by using the device shown in the post above to hook the drive up to another computer. OR boot from a live disk (many flavors available free) and save files to a USB stick. Do not use the affected drive for downloading and burning the disk.
Have you tried running chkdisk to repair the partition? I've had some luck with that. When you say you can "see" your files, I'm kind of assuming you are seeing them in the recovery software. Sometimes chkdisk can make the partition work again. I had one recently that it couldn't at first, but after I poked around with various other recovery tools it suddenly was able to make the partion I needed to get at visible again. I've found that Windows Knows Best when it comes to fixing NTFS partitions.
19 Free Data Recovery Software Tools This guy has done a terrific job! I carry a lot of the portable ones on my hackstick.
Five Best Recovery Tools at Lifehacker (only first four recommended)
In the past year+ I've encountered quite a variety of recovery situations, including one poor gal who was trying to get her files into a new computer with a USB stick that turned out to be punky -- and I found that out after she'd deleted all from the old computer. Luckily not very effectively. Windows Boot Brainfart plus HD going bad, cryptovirus, lots of educational stuff. I got 'em all.