Partition Magic should solve this (about $60). I think it will let you resize the 8.2 leaving free space between the 1.8 and 8.2, then include the free space in the 1.8. This assumes that the 8.2 has 3.2 unused space.
You might think about the 2nd disk (and Drive Image, about $60 also) and do a backup before doing Partition Magic. Drive Image will do the job with an 2nd disk, it will let you rezise as you copy partitions. I have had some problems getting such copies to boot or be recognized (Win NT v4 sp4/sp5) so ...
If you have zip, jaz, tape, network, 2nd hard disk, etc., be sure to back before you start any repartitioning projects.
If you go Partition Magic and move the partitions, it takes a while. If you should crash/powerfail during that process you can corrupt the system (which is why you want backups). A UPS will give some protection against powerfail. Crashes, well, this is a Windows System, no?