CompuServe Messages

OK, I have this problem: I have Dennis Hoffman's PKAZIP 1.01, which is really good; however, there are later versions running on the IBM platform which have a level of compression my 1.01 can't handle. What do users recommend in this case: is there a later version of a zip and/or unzip available, or should I consider converting everything to another format, such as Lha? Thanks for the response! ciao/chow -(;-)>>