Just One More Thing
Conjugation is exactly the same in Subjunctive II as it is for the simple past. The only visible difference will be the umlaut. If you're dealing with a verb that doesn't take an umlaut, which is fairly rare, the context of the sentence should let you know whether you're talking about past events or something that is wished for.
However, there are two modal verbs that are used with this mood. "Would" does have a German equivalent that you can certainly use: würden.
As far as conjugation, this verb works just like werden, which means "will" -- it's the helping verb for the future tense. Here's an example of how you might use würden.
English: Would you bring me a soda?
German: Brächtest du mir bitte ein Cola? (Remember, the simple past of bringen is brachte.)
Würdest du mir bitte ein Cola bringen? (Look -- just like with the future tense, the action verb goes to the end of the sentence.)
The other modal verb is möchten, which means "would like." This is an extremely common verb in German. The conjugation is -e, -est, -e, -en, -et, -en, -en.
And here's how it's used:
English: "Would you like some mustard with that?"
German: "Möchten Sie etwas Senf damit?"
It can also be used with an action verb:
English: "I would like to go shopping today."
German: "Ich möchte heute einkaufen gehen." Note that the same rules apply as for werden and the other modals: the action verb goes to the end of the sentence.