Connecting to older OS

I am now using Win7 as my OS and I have loaded PCAnywhere 11. However, I am able to connect to all the remotes that I need to EXCEPT those that are  still using Win98 (yes they are) with PCANYwhere 9 or 10.
I had no trouble connecting with XP using 10.5

Help... I still need to support those workstations until the end of the year. Any suggestions.

Thanks