Hi Bill - if you want to remove pre-installed carrier bloatware / apps that came with the phone which were installed by the carrier, such as game demos, sound hound and the like, then you would need to root your phone (more info would be found in MyTouch Slide - All Things Root - Android Forums
). Please bear in mind that rooting your phone voids your warrantee, however there are also positives to doing so (like the removal of pre-installed apps). More info on rooting can be found in the “All Things Root” section of your device’s sub-forum, should you want to go for it.
Once you have rooted, it is then possible to install “root only” apps, such as Titanium Backup. TB allows you to remove any apps (including pre-installed carrier apps). It is worth noting that some apps, even if you don’t use/want them, could be used by your system, so it is important not to just start removing apps. Please also note that if it is safe to remove apps for one device, it doesn't necessarily mean that the app is safe to remove for ALL devices. It really depends on the services provided by the app as specified by the particular rom/build. More importantly, system apps are not easily restorable like simply installing an .apk file. And once deleted, even a factory reset will not recover them. You will have to locate and flash a stock rom image to get them back.
One option in TB allows you to freeze apps – I would suggest that you do this initially, as you can always unfreeze the app if you notice that you are experiencing any issues. If, once apps are frozen, your phone is behaving normally, then you can look to removing them. It would be a good idea to freeze apps individually, so that you will notice if each one affects your phone adversely.
Hope that's been of some help... as I said, go to the root section if you do decide to go for it and be careful about what you remove!