Adobe Reader 6 is better than Adobe Acrobat 5, but it depends on your PC. If you're using a Pentium II or earlier with only 64 Mbytes of RAM or less you might be better off with version 5. Version 6.01 will take twice the time to load on most PCs. The difference is noticeable on my 1Ghz AMD Athlon. However, the improvements are worthwhile.
The reason that PDF files don't open in Internet Explorer is to do with plugins. After reinstalling Windows, the file C:\Program Files\Internet Explorer\PLUGINS\nppdf32.dll may have got deleted.
The solution is to copy the file from the Adobe folder. I think that is all you need to do, but you might also need to check an option in the preferences for Adobe Acrobat, or even reinstall Adobe Acrobat.
Microsoft® Windows 98 Second Edition, Windows Millennium Edition, Windows NT® 4.0 with Service Pack 6, Windows 2000 with Service Pack 2, Windows XP Professional or Home Edition, Windows XP Tablet PC Edition
It does make a difference, and the program is well designed. Just make sure you read the advice carefully. What I found though, is that once you have loaded the reader once, the second time is then so fast anyway that the speedup becomes neglible.
If you're interested, take a look at my test results: click here
You achieve a loading time reduction from 15 seconds to twelve - three seconds saved or in another example 4 seconds to three seconds - one second saved. I am finding it difficult to make any comment without seeming to be unreasonably sarcastic.
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