Since having your product create a trap would still necessitate loading the MIB on the Solarwinds server to interpret the trap, this is probably not the right way to go. How about Syslog? There are several free/cheap tools that will take an incoming message (or text written to a log file, or whatever) and convert it to syslog which is more freeform, and then SolarWinds could receive and interperet THAT instead.
Another alternative is to have the vendor's product write to a log file on that system, and have Solarwinds monitor the log file.
There are a number of other options, before you resort to SNMP Alerts (whatever that means. SNMP really only has polling and traps, as far as I know).
